Privacy Policy

We respect your privacy and are committed to protecting your personal data. This privacy policy explains how we collect, use, and share your personal data when you use our products.

Data Controller: Andrew Shephard, Zahradníčkova 1220/20a, Prague, Czech Republic 150 00. Contact: hello@chunks.app.

Information We Collect

We may collect the following types of personal data from you:

• Contact information, such as your name and email address, if you create an account or sign in
• Usage information, such as your IP address, browser type, and operating system
• Device and app information, such as device model, operating system version, app version, language, and an app install identifier
• Activity in the app, such as which stories you open, play, finish, favourite, or search for
• Session recordings of your use of the app — see Session Recordings below
• Content you create, such as the title and description you enter when generating a personalised story
• Transaction information, such as your purchase history and subscription status. We never receive your card details
• A push notification token, if you enable notifications
• Crash and performance diagnostics when something goes wrong
• An advertising identifier, only on iOS and only if you allow tracking when asked — see Advertising and Attribution below

You can use most of the app without creating an account. We may collect this information directly from you, from your device, or from third-party sources such as the app stores and attribution providers.

How We Use Your Information

We may use your personal data for the following purposes:

• To provide you with access our products and services
• To communicate with you about your account or our products and services
• To improve our products and personalize your user experience
• To comply with our legal obligations or enforce our terms of use

We may also use your personal data for other purposes with your consent.

Information Sharing

We may share your personal data with third-party service providers who assist us with our business operations, such as payment processors or marketing agencies. We may also share your personal data if required by law or to protect our legal rights or the safety of our users.

Services We Use

We use the following providers to run Chunks. Each processes personal data on our instructions, for the purpose listed:

• Google Firebase — sign-in, storing your library and progress, push notifications, crash reporting, and performance monitoring.
• PostHog — product analytics and session recordings, so we can see how the app is used and where it goes wrong. Hosted in the EU.
• RevenueCat — recording what you have purchased and whether your access is active.
• AppsFlyer and Apple Search Ads — working out which advert or link brought you to the app.
• Algolia — powering search, including what you type into the search bar.
• Anthropic and ElevenLabs — writing and narrating personalised stories from the prompts you enter.
• Cloudflare — serving content and protecting the service from abuse.
• Apple and Google — processing payments and handling refund requests.

We do not sell your personal data, and we do not share it with advertisers for their own purposes.

Session Recordings

We record app sessions through PostHog. A recording is a reconstruction of what appeared on screen and where you tapped, which we use to find bugs and to understand where people get stuck. Recordings capture the text and images displayed in the app, because the app mostly shows published educational content rather than anything you have written.

Screens showing your account email or user ID are masked, so those values do not appear in a recording. We never record anything outside the Chunks app, and we do not capture your keyboard input from other apps.

If you would rather not be recorded, email hello@chunks.app and we will exclude your account and delete any recordings we still hold.

Advertising and Attribution

We advertise Chunks, and we want to know which adverts actually work so we are not paying for ones that do not. On iOS, we ask permission before using your device's advertising identifier for that purpose; if you decline, attribution still happens in a way that does not identify you, and the rest of the app is unaffected. You can change your answer at any time in iOS Settings under Privacy & Security, Tracking.

We use this data to measure our own advertising. We do not build advertising profiles about you, and we do not pass your data to advertising networks for them to target you elsewhere.

Personalised Stories

When you generate a personalised story, the title and description you enter are sent to our AI providers (Anthropic for the text, ElevenLabs for the narration) to produce it, along with the resulting story. Please do not enter personal or sensitive details about yourself or anyone else in those fields — they are not needed to write a good story, and they are best left out of any system that does not need them. We keep a record of your generated stories so they stay in your library, and you can delete them from the app at any time.

International Transfers

We are based in the Czech Republic, and some of the providers listed above process data in the United States or other countries outside the European Economic Area. Where that happens, the transfer is covered by the European Commission's Standard Contractual Clauses or another approved safeguard, as set out in our agreements with each provider. You can ask us for details of the safeguards that apply by emailing hello@chunks.app.

Purchases and Refund Requests

Purchases are made through the Apple App Store or Google Play, and we never see your card details. We use RevenueCat as a processor to record what you have bought and whether your access is currently active, so the app can unlock the right content on any device you sign in on.

When you ask Apple or Google for a refund, the store may ask us for information about how the purchase was used before it decides. Where it does, we may share:

• how much of the content the account had accessed, and how long it had been active;
• whether the purchase was delivered successfully;
• whether the account has requested refunds previously.

We share this so the store can reach a fair decision, and to prevent misuse of purchases and refunds. Our legal basis is legitimate interests. The store, not Chunks, makes the final decision on every refund. You can object to this sharing at any time by emailing hello@chunks.app, and we will stop sharing it for your account.

We also keep a record of refunds associated with an account, which we use to apply the limits described in our Terms of Use. Those limits are applied by staff review and simple counting rules, not by automated decision-making that produces legal effects.

Cookies and Similar Technologies

We may use cookies and similar technologies to collect usage information and improve your user experience. You can control the use of cookies through your browser settings.

Data Retention

We will retain your personal data for as long as necessary to fulfill the purposes for which it was collected, unless a longer retention period is required by law.

Your Rights

You have the right to access, correct, or delete your personal data that we have collected. You also have the right to object to the processing of your personal data or to request that we restrict the processing of your personal data. To exercise these rights, please contact us at hello@chunks.app.

For European Users (GDPR)

If you are located in the European Economic Area (EEA), the United Kingdom, or Switzerland, you have additional rights under the General Data Protection Regulation (GDPR).

Legal Basis for Processing

We process your personal data on the following legal bases:

• Contract performance: To provide you with our app and services as described in our Terms of Use.
• Legitimate interests: To improve our products, prevent fraud, and ensure security, where these interests are not overridden by your rights.
• Consent: Where you have given explicit consent, such as for marketing communications or optional analytics. You may withdraw consent at any time.
• Legal obligation: To comply with applicable laws and regulations.

Your GDPR Rights

In addition to the rights listed above, you have the right to:

• Right to erasure: Request deletion of your personal data. We will comply unless we have a legal obligation to retain it. To request deletion, email hello@chunks.app or use the account deletion feature in the app.
• Right to data portability: Receive your personal data in a structured, commonly used, machine-readable format.
• Right to restrict processing: Request that we limit how we use your data while a complaint is being resolved.
• Right to object: Object to processing based on legitimate interests, including profiling.
• Right to lodge a complaint: File a complaint with your local data protection authority if you believe your rights have been violated.

Data Protection Contact

For any GDPR-related enquiries or to exercise your rights, contact us at hello@chunks.app. Data controller: Andrew Shephard, Zahradníčkova 1220/20a, Prague, Czech Republic 150 00.

For California Users (CCPA/CPRA)

If you are a California resident, the California Consumer Privacy Act (CCPA) and the California Privacy Rights Act (CPRA) provide you with additional rights regarding your personal information.

Categories of Personal Information We Collect

• Identifiers: Name, email address, IP address, device identifiers.
• Internet or electronic network activity: Browsing history within the app, interactions with content, search queries.
• Commercial information: Purchase history, subscription status.
• Inferences: Content preferences and interests based on your usage patterns.

Your CCPA/CPRA Rights

• Right to know: Request details about the categories and specific pieces of personal information we have collected about you.
• Right to delete: Request deletion of your personal information, subject to certain exceptions.
• Right to correct: Request correction of inaccurate personal information.
• Right to opt out of sale or sharing: You have the right to opt out of the sale or sharing of your personal information.
• Right to non-discrimination: We will not discriminate against you for exercising any of your CCPA/CPRA rights.

Do Not Sell or Share My Personal Information

We do not sell your personal information. We do not share your personal information for cross-context behavioural advertising. We may share certain data with analytics and advertising partners (such as PostHog, Google Analytics, and Meta) to help us understand how our app is used and to reach potential users. You may opt out of this sharing by contacting us at hello@chunks.app.

To exercise any of your CCPA/CPRA rights, contact us at hello@chunks.app. We will verify your identity before processing your request and respond within 45 days.

Cookies and Consent

Our website and app use the following categories of cookies and tracking technologies:

• Essential cookies: Required for the website to function. These cannot be disabled.
• Analytics cookies: Help us understand how visitors interact with our website and app (e.g., PostHog, Google Analytics). These collect anonymised usage data.
• Marketing cookies: Used to deliver relevant advertisements and measure campaign effectiveness (e.g., Meta Pixel, TikTok Pixel).

You can manage your cookie preferences through your browser settings. Most browsers allow you to block or delete cookies. Note that disabling certain cookies may affect the functionality of our website.

Changes to Our Privacy Policy

We reserve the right to modify this privacy policy at any time. If we make material changes to this privacy policy, we will notify you by email or by posting a notice on our website and app.