Privacy Policy

Last updated 05/15/2026

This privacy notice for Ghostline, Inc ("Company," "we," "us," or "our"), describes how and why we might collect, store, use, and/or share ("process") your information when you use our services ("Services"), such as when you:

Download and use our mobile application (Ghostline), or any other application of ours that links to this privacy notice

Engage with us in other related ways, including any sales, marketing, or events

Questions or concerns? Reading this privacy notice will help you understand your privacy rights and choices. If you do not agree with our policies and practices, please do not use our Services. If you still have any questions or concerns, please contact us at privacy@ghostline.app.

SUMMARY OF KEY POINTS

This summary provides key points from our privacy notice. More details can be found below.

What personal information do we process? When you visit, use, or navigate our Services, we may process personal information depending on how you interact with Ghostline, Inc and the Services, the choices you make, and the products and features you use.

Do we process any sensitive personal information? We do not process sensitive personal information.

Do we receive any information from third parties? We receive subscription status from RevenueCat (our subscription management provider) and anonymized aggregate analytics reports from Google Firebase (our analytics and crash-reporting provider). We do not receive information about you from advertising networks or data brokers.

How do we process your information? We process your information to provide, improve, and administer our Services, communicate with you, for security and fraud prevention, and to comply with law. We may also process your information for other purposes with your consent. We process your information only when we have a valid legal reason to do so.

In what situations and with which parties do we share personal information? We may share information in specific situations and with specific third parties.

How do we keep your information safe? We have organizational and technical processes and procedures in place to protect your personal information. However, no electronic transmission over the internet or information storage technology can be guaranteed to be 100% secure, so we cannot promise or guarantee that hackers, cybercriminals, or other unauthorized third parties will not be able to defeat our security and improperly collect, access, steal, or modify your information.

What are your rights? Depending on where you are located geographically, the applicable privacy law may mean you have certain rights regarding your personal information.

How do you exercise your rights? The easiest way to exercise your rights is by contacting us at privacy@ghostline.app. We will consider and act upon any request in accordance with applicable data protection laws.

TABLE OF CONTENTS

  1. WHAT INFORMATION DO WE COLLECT?
  2. HOW DO WE PROCESS YOUR INFORMATION?
  3. WHAT LEGAL BASES DO WE RELY ON TO PROCESS YOUR PERSONAL INFORMATION?
  4. WHEN AND WITH WHOM DO WE SHARE YOUR PERSONAL INFORMATION?
  5. DO WE USE COOKIES AND OTHER TRACKING TECHNOLOGIES?
  6. HOW LONG DO WE KEEP YOUR INFORMATION?
  7. HOW DO WE KEEP YOUR INFORMATION SAFE?
  8. DO WE COLLECT INFORMATION FROM MINORS?
  9. WHAT ARE YOUR PRIVACY RIGHTS?
  10. CONTROLS FOR DO-NOT-TRACK FEATURES
  11. DO CALIFORNIA RESIDENTS HAVE SPECIFIC PRIVACY RIGHTS?
  12. DO WE MAKE UPDATES TO THIS NOTICE?
  13. HOW CAN YOU CONTACT US ABOUT THIS NOTICE?
  14. HOW CAN YOU REVIEW, UPDATE, OR DELETE THE DATA WE COLLECT FROM YOU?

1. WHAT INFORMATION DO WE COLLECT?

In Short: We collect information necessary to operate the app, generate stencils, verify your subscription, and diagnose problems. We do not collect personally identifying contact information (your name, email, or postal address) unless you contact us directly.

Sensitive Information. We do not process sensitive information. We do not collect biometric data, precise location, contact lists, calendars, microphone audio, or health data.

Information collected when you use the app:

Photos you upload for stencil generation. When you use the Pro Stencil feature, the photo you select is sent to our processing servers to generate a stencil. The original photo and the generated stencil are retained on our servers for up to thirty (30) days to support response caching (so repeated requests return quickly) and to allow us to investigate and resolve processing errors. After thirty (30) days these files are automatically deleted. Photos selected for use with the Classic Stencil feature are processed entirely on your device and are not sent to us.

Photo library access. The app uses Apple's standard photo picker (PHPickerViewController) to let you choose a photo. We do not request broad photo library access; only the specific photo you select is made available to the app.

Subscription and purchase data. We use RevenueCat to manage your subscription status. RevenueCat receives your App Store transaction identifier and an anonymous user identifier in order to verify entitlements. We do not see your payment method, billing address, or App Store account details — these remain with Apple.

App usage analytics. We use Google Firebase Analytics to understand how the app is used. Events include screen views, button taps, settings choices (such as your preferred paper size or stencil engine), and processing durations. Each event is associated with an anonymous Firebase installation identifier.

Crash and performance diagnostics. We use Google Firebase Crashlytics to receive crash reports when the app encounters an error. Reports include device model, operating system version, the stack trace at the point of failure, and breadcrumbs we record about your recent navigation and the dimensions of images being processed. Reports are not linked to your subscription identity.

On-device preferences. Your in-app choices (preferred stencil engine, default paper size, and similar settings) are stored locally on your device using iOS UserDefaults and are not transmitted to us.

Internet Protocol (IP) address. When the app contacts our stencil-processing servers, our server receives your IP address as part of the network connection. IP addresses appear in our server access logs and are retained according to our hosting provider's standard log retention practices. We use these logs for operational purposes (delivering responses, diagnosing service errors) and to detect abuse. We do not use IP addresses for advertising or cross-app tracking.

The Ghostline app does not request or collect your precise or coarse location, does not access your camera, microphone, contacts, calendars, or health data, and does not use the Identifier for Advertisers (IDFA).

2. HOW DO WE PROCESS YOUR INFORMATION?

In Short: We process your information to provide, improve, and administer our Services, communicate with you, for security and fraud prevention, and to comply with law. We may also process your information for other purposes with your consent.

We process your personal information for a variety of reasons, depending on how you interact with our Services, including:

To request feedback. We may process your information when necessary to request feedback and to contact you about your use of our Services.

To protect our Services. We may process your information as part of our efforts to keep our Services safe and secure, including fraud monitoring and prevention.

To identify usage trends. We may process information about how you use our Services to better understand how they are being used so we can improve them.

To save or protect an individual's vital interest. We may process your information when necessary to save or protect an individual’s vital interest, such as to prevent harm.

3. WHAT LEGAL BASES DO WE RELY ON TO PROCESS YOUR INFORMATION?

In Short: We only process your personal information when we believe it is necessary and we have a valid legal reason (i.e., legal basis) to do so under applicable law, like with your consent, to comply with laws, to provide you with services to enter into or fulfill our contractual obligations, to protect your rights, or to fulfill our legitimate business interests.

If you are located in the EU or UK, this section applies to you.

The General Data Protection Regulation (GDPR) and UK GDPR require us to explain the valid legal bases we rely on in order to process your personal information. As such, we may rely on the following legal bases to process your personal information:

Consent. We may process your information if you have given us permission (i.e., consent) to use your personal information for a specific purpose. You can withdraw your consent at any time. 

Legitimate Interests. We may process your information when we believe it is reasonably necessary to achieve our legitimate business interests and those interests do not outweigh your interests and fundamental rights and freedoms. For example, we may process your personal information for some of the purposes described in order to:

Analyze how our Services are used so we can improve them to engage and retain users

Support our marketing activities

Diagnose problems and/or prevent fraudulent activities

Understand how our users use our products and services so we can improve user experience

Legal Obligations. We may process your information where we believe it is necessary for compliance with our legal obligations, such as to cooperate with a law enforcement body or regulatory agency, exercise or defend our legal rights, or disclose your information as evidence in litigation in which we are involved.

Vital Interests. We may process your information where we believe it is necessary to protect your vital interests or the vital interests of a third party, such as situations involving potential threats to the safety of any person.


If you are located in Canada, this section applies to you.

We may process your information if you have given us specific permission (i.e., express consent) to use your personal information for a specific purpose, or in situations where your permission can be inferred (i.e., implied consent).

In some exceptional cases, we may be legally permitted under applicable law to process your information without your consent, including, for example:

If collection is clearly in the interests of an individual and consent cannot be obtained in a timely way

For investigations and fraud detection and prevention

For business transactions provided certain conditions are met

If it is contained in a witness statement and the collection is necessary to assess, process, or settle an insurance claim

For identifying injured, ill, or deceased persons and communicating with next of kin

If we have reasonable grounds to believe an individual has been, is, or may be victim of financial abuse

If it is reasonable to expect collection and use with consent would compromise the availability or the accuracy of the information and the collection is reasonable for purposes related to investigating a breach of an agreement or a contravention of the laws of Canada or a province

If disclosure is required to comply with a subpoena, warrant, court order, or rules of the court relating to the production of records

If it was produced by an individual in the course of their employment, business, or profession and the collection is consistent with the purposes for which the information was produced

If the collection is solely for journalistic, artistic, or literary purposes

If the information is publicly available and is specified by the regulations

4. WHEN AND WITH WHOM DO WE SHARE YOUR PERSONAL INFORMATION?

In Short: We share information with a small set of named service providers necessary to operate the app. We do not sell your personal information. We do not share information with advertising networks or data brokers.

We share information with the following service providers (sub-processors) to operate Ghostline:

Google LLC — Firebase Analytics and Firebase Crashlytics. Receives anonymous app usage events, crash reports, and performance diagnostics. Subject to Google's Privacy Policy (https://policies.google.com/privacy) and the Firebase Data Processing Terms (https://firebase.google.com/terms/data-processing-terms). Data is processed in Google data-center regions including the United States.

Google Cloud Platform (Google LLC) — hosts our Pro Stencil processing infrastructure. When you use the Pro Stencil feature, the photo you upload is processed on virtual machines we operate on Google Cloud Platform. Photos and generated stencils are retained for up to thirty (30) days as described in Section 6 and are then automatically deleted. Google Cloud acts solely as our hosting provider and does not have independent access to or rights over this data. Data is processed in Google Cloud regions located in the United States. For users in the European Economic Area, the United Kingdom, or Switzerland, this constitutes an international transfer of personal data; we rely on Google's certification under the EU-U.S. Data Privacy Framework (and its UK Extension and Swiss-U.S. counterpart where applicable) as the lawful basis for that transfer. Subject to the Google Cloud Platform Terms of Service.

RevenueCat, Inc. — manages subscription verification on our behalf. Receives your App Store transaction data and an anonymous user identifier. Subject to RevenueCat's Privacy Policy (https://www.revenuecat.com/privacy). Data is processed in the United States.

Apple Inc. — handles all payment processing for subscriptions through the App Store. We do not receive your payment method, billing address, or App Store account details. Subject to Apple's Privacy Policy (https://www.apple.com/legal/privacy/).

Business Transfers. We may share or transfer your information in connection with, or during negotiations of, any merger, sale of company assets, financing, or acquisition of all or a portion of our business to another company. We will notify users of any such transfer through this privacy notice or by direct notice.

5. DO WE USE COOKIES OR OTHER TRACKING TECHNOLOGIES?

In Short: Ghostline is a mobile application and does not use HTTP cookies, web beacons, or pixels. We use a limited set of on-device identifiers as described below.

Ghostline is a mobile application and does not use HTTP cookies, web beacons, or pixels. The on-device identifiers we rely on are:

Firebase installation identifier. A unique anonymous identifier generated by Firebase when the app is first launched. It resets when you uninstall and reinstall the app. Used by Firebase Analytics and Firebase Crashlytics to distinguish anonymous installs.

RevenueCat anonymous user identifier. An anonymous identifier assigned by RevenueCat to manage your subscription status. Not linked to your name, email, or App Store account.

App-local preferences. Your stencil engine choice, default paper size, and similar in-app preferences are stored on your device using iOS UserDefaults and are not transmitted to us.

We do not request the Identifier for Advertisers (IDFA) and do not engage in cross-app or cross-site tracking.

6. HOW LONG DO WE KEEP YOUR INFORMATION?

In Short: Photos uploaded for Pro Stencil generation are retained for thirty (30) days. Analytics and crash data follow our providers' standard retention. Subscription records are kept while your account exists.

Specific retention periods:

Photos uploaded for Pro Stencil generation, and the stencils generated from them, are retained on our servers for up to thirty (30) days for response caching and to allow us to investigate processing errors. After thirty (30) days these files are automatically deleted.

App usage analytics (collected via Google Firebase Analytics) are retained according to our Firebase project's configured retention period and Google's standard retention practices.

Crash and performance diagnostics (collected via Google Firebase Crashlytics) are retained according to Google's standard Crashlytics retention practices.

Subscription records (managed by RevenueCat) are retained for the lifetime of your subscription relationship and for any period required by tax or accounting laws.

On-device preferences are stored only on your device and remain there until you delete the app or clear its data.

When we have no ongoing legitimate business need to process your personal information, we will either delete or anonymize such information, or, if this is not possible (for example, because your personal information has been stored in backup archives), then we will securely store your personal information and isolate it from any further processing until deletion is possible.

7. HOW DO WE KEEP YOUR INFORMATION SAFE?

In Short: We aim to protect your personal information through a system of organizational and technical security measures.

We have implemented appropriate and reasonable technical and organizational security measures designed to protect the security of any personal information we process. However, despite our safeguards and efforts to secure your information, no electronic transmission over the Internet or information storage technology can be guaranteed to be 100% secure, so we cannot promise or guarantee that hackers, cybercriminals, or other unauthorized third parties will not be able to defeat our security and improperly collect, access, steal, or modify your information. Although we will do our best to protect your personal information, transmission of personal information to and from our Services is at your own risk. You should only access the Services within a secure environment.

8. DO WE COLLECT INFORMATION FROM MINORS?

In Short: We do not knowingly collect data from or market to children under 18 years of age.

We do not knowingly solicit data from or market to children under 18 years of age. By using the Services, you represent that you are at least 18 or that you are the parent or guardian of such a minor and consent to such minor dependent’s use of the Services. If we learn that personal information from users less than 18 years of age has been collected, we will deactivate the account and take reasonable measures to promptly delete such data from our records. If you become aware of any data we may have collected from children under age 18, please contact us at privacy@ghostline.app.

9. WHAT ARE YOUR PRIVACY RIGHTS?

In Short: In some regions, such as the European Economic Area (EEA), United Kingdom (UK), and Canada, you have rights that allow you greater access to and control over your personal information. You may review, change, or terminate your account at any time.

In some regions (like the EEA, UK, and Canada), you have certain rights under applicable data protection laws. These may include the right (i) to request access and obtain a copy of your personal information, (ii) to request rectification or erasure; (iii) to restrict the processing of your personal information; and (iv) if applicable, to data portability. In certain circumstances, you may also have the right to object to the processing of your personal information. You can make such a request by contacting us by using the contact details provided in the section "HOW CAN YOU CONTACT US ABOUT THIS NOTICE?" below.

We will consider and act upon any request in accordance with applicable data protection laws.

If you are located in the EEA or UK and you believe we are unlawfully processing your personal information, you also have the right to complain to your local data protection supervisory authority. You can find their contact details here: https://ec.europa.eu/justice/data-protection/bodies/authorities/index_en.htm.

If you are located in Switzerland, the contact details for the data protection authorities are available here: https://www.edoeb.admin.ch/edoeb/en/home.html.

Consent for analytics and crash reporting (EEA, UK, Switzerland): If you are located in the European Economic Area, the United Kingdom, or Switzerland, the app displays a banner on the home screen asking whether you consent to anonymous app usage analytics and crash reporting. No analytics or crash data is collected until you tap "Allow." You can change this choice at any time via the Info → Privacy screen inside the app. Declining does not affect the core functionality of the app, including stencil generation, printing, or your subscription. Declining crash reporting will prevent us from receiving diagnostic information when the app encounters errors on your device, which may delay or limit our ability to investigate issues that affect you.

Withdrawing your consent: If we are relying on your consent to process your personal information, which may be express and/or implied consent depending on the applicable law, you have the right to withdraw your consent at any time. You can withdraw consent for analytics and crash reporting via the Info → Privacy screen inside the app. You can withdraw consent for other processing by contacting us using the contact details provided in the section "HOW CAN YOU CONTACT US ABOUT THIS NOTICE?" below.

However, please note that this will not affect the lawfulness of the processing before its withdrawal nor, when applicable law allows, will it affect the processing of your personal information conducted in reliance on lawful processing grounds other than consent.

If you have questions or comments about your privacy rights, you may email us at privacy@ghostline.app.

10. CONTROLS FOR DO-NOT-TRACK FEATURES

Most web browsers and some mobile operating systems and mobile applications include a Do-Not-Track ("DNT") feature or setting you can activate to signal your privacy preference not to have data about your online browsing activities monitored and collected. At this stage no uniform technology standard for recognizing and implementing DNT signals has been finalized. As such, we do not currently respond to DNT browser signals or any other mechanism that automatically communicates your choice not to be tracked online. If a standard for online tracking is adopted that we must follow in the future, we will inform you about that practice in a revised version of this privacy notice.

11. DO CALIFORNIA RESIDENTS HAVE SPECIFIC PRIVACY RIGHTS?

In Short: Yes, if you are a resident of California, you are granted specific rights regarding access to your personal information.

California Civil Code Section 1798.83, also known as the "Shine The Light" law, permits our users who are California residents to request and obtain from us, once a year and free of charge, information about categories of personal information (if any) we disclosed to third parties for direct marketing purposes and the names and addresses of all third parties with which we shared personal information in the immediately preceding calendar year. If you are a California resident and would like to make such a request, please submit your request in writing to us using the contact information provided below.

If you are under 18 years of age, reside in California, and have a registered account with Services, you have the right to request removal of unwanted data that you publicly post on the Services. To request removal of such data, please contact us using the contact information provided below and include the email address associated with your account and a statement that you reside in California. We will make sure the data is not publicly displayed on the Services, but please be aware that the data may not be completely or comprehensively removed from all our systems (e.g., backups, etc.).

CCPA Privacy Notice

The California Code of Regulations defines a "resident" as:

(1) every individual who is in the State of California for other than a temporary or transitory purpose and
(2) every individual who is domiciled in the State of California who is outside the State of California for a temporary or transitory purpose

All other individuals are defined as "non-residents."

If this definition of "resident" applies to you, we must adhere to certain rights and obligations regarding your personal information.

What categories of personal information do we collect?

We have collected the following categories of personal information in the past twelve (12) months:

  • Identifiers: Anonymous device-level identifiers (Firebase installation identifier, RevenueCat anonymous user identifier, App Store transaction identifier), and IP addresses appearing in our server access logs.

  • Personal information (Cal. Civ. Code § 1798.80(e)): none

  • Protected classification characteristics: none

  • Commercial information: Subscription purchase history (App Store transaction records, managed via RevenueCat).

  • Biometric information: none

  • Internet or other electronic network activity information: Application interaction data including screen views, button taps, settings choices, processing durations, and crash and performance diagnostics.

  • Geolocation data: Approximate location may be inferred from IP address in server access logs. We do not collect precise location data and do not actively derive or use approximate location for any purpose.

  • Audio, electronic, visual, thermal, olfactory, or similar information: Photographs that you upload when using the Pro Stencil feature. Photos and the resulting stencils are retained for up to thirty (30) days and then automatically deleted.

  • Professional or employment-related information: none

  • Education information: none

  • Inferences drawn from other personal information: none

    We may also collect other personal information outside of these categories through instances where you interact with us in person, online, or by phone or mail in the context of:
  Receiving help through our customer support channels;

  Participation in customer surveys or contests; and

  Facilitation in the delivery of our Services and to respond to your inquiries.

    How do we use and share your personal information?

    More information about our data collection and sharing practices can be found in this privacy notice.

    You may contact us by email at privacy@ghostline.app, or by referring to the contact details at the bottom of this document.

    If you are using an authorized agent to exercise your right to opt out we may deny a request if the authorized agent does not submit proof that they have been validly authorized to act on your behalf.

    Will your information be shared with anyone else?

    We may disclose your personal information with our service providers pursuant to a written contract between us and each service provider. Each service provider is a for-profit entity that processes the information on our behalf.

    We may use your personal information for our own business purposes, such as for undertaking internal research for technological development and demonstration. This is not considered to be "selling" of your personal information.

    Ghostline, Inc has not sold or shared (as those terms are defined under the California Privacy Rights Act) any personal information to third parties for a business or commercial purpose in the preceding twelve (12) months. Ghostline, Inc does not sell or share personal information for cross-context behavioral advertising, and has no plans to do so.

    Your rights with respect to your personal data

    Right to request deletion of the data — Request to delete

    You can ask for the deletion of your personal information. If you ask us to delete your personal information, we will respect your request and delete your personal information, subject to certain exceptions provided by law, such as (but not limited to) the exercise by another consumer of his or her right to free speech, our compliance requirements resulting from a legal obligation, or any processing that may be required to protect against illegal activities.

    Right to be informed — Request to know

    Depending on the circumstances, you have a right to know:

    whether we collect and use your personal information;

    the categories of personal information that we collect;

    the purposes for which the collected personal information is used;

    whether we sell your personal information to third parties;

    the categories of personal information that we sold or disclosed for a business purpose;

    the categories of third parties to whom the personal information was sold or disclosed for a business purpose; and

    the business or commercial purpose for collecting or selling personal information.

    In accordance with applicable law, we are not obligated to provide or delete consumer information that is de-identified in response to a consumer request or to re-identify individual data to verify a consumer request.

    Right to Non-Discrimination for the Exercise of a Consumer’s Privacy Rights

    We will not discriminate against you if you exercise your privacy rights.

Verification process

Upon receiving your request, we will need to verify your identity to determine you are the same person about whom we have the information in our system. These verification efforts require us to ask you to provide information so that we can match it with information you have previously provided us. For instance, depending on the type of request you submit, we may ask you to provide certain information so that we can match the information you provide with the information we already have on file, or we may contact you through a communication method (e.g., phone or email) that you have previously provided to us. We may also use other verification methods as the circumstances dictate.

We will only use personal information provided in your request to verify your identity or authority to make the request. To the extent possible, we will avoid requesting additional information from you for the purposes of verification. However, if we cannot verify your identity from the information already maintained by us, we may request that you provide additional information for the purposes of verifying your identity and for security or fraud-prevention purposes. We will delete such additionally provided information as soon as we finish verifying you.

Other privacy rights

You may object to the processing of your personal information.

You may request correction of your personal data if it is incorrect or no longer relevant, or ask to restrict the processing of the information.

You can designate an authorized agent to make a request under the CCPA on your behalf. We may deny a request from an authorized agent that does not submit proof that they have been validly authorized to act on your behalf in accordance with the CCPA.

You may request to opt out from future selling of your personal information to third parties. Upon receiving an opt-out request, we will act upon the request as soon as feasibly possible, but no later than fifteen (15) days from the date of the request submission.

To exercise these rights, you can contact us by email at privacy@ghostline.app, or by referring to the contact details at the bottom of this document. If you have a complaint about how we handle your data, we would like to hear from you.

12. DO WE MAKE UPDATES TO THIS NOTICE?

In Short: Yes, we will update this notice as necessary to stay compliant with relevant laws.

We may update this privacy notice from time to time. The updated version will be indicated by an updated "Revised" date and the updated version will be effective as soon as it is accessible. If we make material changes to this privacy notice, we may notify you either by prominently posting a notice of such changes or by directly sending you a notification. We encourage you to review this privacy notice frequently to be informed of how we are protecting your information.

13. HOW CAN YOU CONTACT US ABOUT THIS NOTICE?

If you have questions or comments about this notice, you may email us at privacy@ghostline.app or by post to:

Ghostline, Inc
24302 Del Prado Ave., Unit A
Dana Point, CA, 92629

14. HOW CAN YOU REVIEW, UPDATE, OR DELETE THE DATA WE COLLECT FROM YOU?

Based on the applicable laws of your country, you may have the right to request access to the personal information we collect from you, change that information, or delete it. To request to review, update, or delete your personal information, please submit a request by emailing privacy@ghostline.app or by post at the address listed in section 13.