Effective July 26, 2026

Privacy Policy

ClickBook is built to keep reading activity on your device whenever possible. The app does not require an account, does not include advertising or third-party analytics SDKs, and is designed so the text you read and tap for explanations is processed locally rather than sent to our own servers during normal reading use. Internet access is used for limited purposes such as the one-time on-device AI model download, app-store purchase and restore flows, purchase entitlement checks, platform services, and optional backups. The mother-tongue language you pick is stored locally and used only to shape on-device translations and explanations.

1. Controller and scope

This Privacy Policy explains how ClickBook processes information when you install and use the ClickBook mobile application, including the library, reader, vocabulary, and on-device AI features.

Mohamad Mohamad is the provider of ClickBook and, where applicable, the controller responsible for personal data processed for this app.

Contact: [email protected] | +49 179 266 4501 | Auf der Breite 3, 31515 Wunstorf, Germany

2. Information ClickBook processes

ClickBook does not require you to create an account and does not ask you to provide your name, payment card details, contacts, microphone input, camera input, or precise location in order to use the app.

If you buy or restore optional paid features, the store operator (Apple or Google) and the purchase-management provider RevenueCat process order, billing, tax, refund, entitlement, and technical request data under their own privacy notices. ClickBook itself does not ask you to enter payment-card data in the app.

ClickBook does not track you across apps or websites, contains no advertising or analytics SDKs, and does not collect the text of your books or the words you tap.

Imported-book data, including the EPUB files and readable PDF files you choose to import, file names, local file URIs, extracted metadata such as title and author, language selection, locally generated cover images, and local reader files created from imported PDFs.
Reading activity data, including recently opened books, reading progress, section labels, saved EPUB locations, and reader display preferences.
Vocabulary data, including words you tap, surrounding context, the time of the tap, the associated book title, and generated meanings or example sentences stored in the local vocabulary history.
Settings and preference data, including reading mode, fullscreen preferences, enabled prompt settings, Pro feature settings, and the mother-tongue (AI language) you choose during first-run setup or later change in settings. This language preference is stored on your device and used only to shape on-device translations and explanations.
Model download state and related technical records needed to start, resume, verify, or complete the one-time download of the on-device AI model, which is initiated during first-run setup before the reader becomes available.
Purchase and entitlement state needed to offer, unlock, verify, or restore optional paid features such as ClickBook Pro. This includes product identifiers, entitlement identifiers, purchase and restore status, purchase history held by the store, and an anonymous app user identifier generated by RevenueCat. That identifier is a random value created on your device; it is not your name, email address, Apple ID, or Google account, and ClickBook does not link it to any identity.
Standard technical request data that may be processed by the app store, purchase-management provider, model host, content delivery network, or backup provider when you download the app, buy or restore a purchase, download the AI model, or use platform-managed backup services.

3. How ClickBook uses information

To import, organize, display, and open books in your local library.
To extract text from readable PDFs and create local reader files so imported PDFs can be opened in ClickBook.
To save your reading position, settings, and vocabulary history between sessions.
To generate on-device explanations, translations, and example sentences for tapped words.
To download, store, verify, and resume the required on-device AI model.
To offer, unlock, verify, and restore optional paid features such as ClickBook Pro.
To maintain the security, reliability, and basic operation of the app.

4. Legal bases where required by law

Where the GDPR or similar laws apply, ClickBook generally relies on performance of a contract or steps taken at your request to provide the features you choose to use, such as importing a file, opening a book, or saving your reading progress.

ClickBook may also rely on your consent or affirmative user action when you choose a local file through the system document picker, import a PDF, start the AI model download, buy or restore an optional paid feature, or enable platform-managed backup features on your device.

Where necessary, ClickBook may rely on legitimate interests in maintaining app security, preventing abuse, troubleshooting failures, and keeping the app functional.

ClickBook does not use your information for targeted advertising, does not sell personal information, and does not use automated decision-making or profiling that produces legal or similarly significant effects.

5. On-device processing and network use

Reading activity, saved books, reading progress, tapped words, and generated word explanations are designed to stay on your device during normal use. ClickBook does not send the book text you read, the words you tap, or the generated explanations to our own servers for cloud processing.

Imported PDFs are processed locally where possible to extract readable text and create reader files. ClickBook does not upload imported PDFs to our own servers for conversion.

Internet access is used for limited operational purposes such as using Apple App Store or Google Play purchase and restore services, checking purchase entitlements through the purchase-management service RevenueCat, and using platform or backup services connected to distribution and device operation. The on-device AI model currently used is Gemma 4 E2B XS (Q3_K_S), roughly 1.73 GB in GGUF format. On iOS it is bundled inside the app, so no model download takes place. On Android it is downloaded once during first-run setup through a Hugging Face file URL.

Your mother-tongue selection is stored only on your device. It is never uploaded to our servers and is used only to choose the language in which the on-device AI produces translations and explanations.

6. Permissions and device access

You can refuse optional actions such as choosing a local file, importing a PDF, downloading the AI model, buying or restoring Pro, or enabling backup, but the related feature may not work until you take that action.

ClickBook uses the system document picker only when you choose a file to import into the app.
ClickBook does not perform full-device EPUB or PDF scans and does not require Android all-files access for normal use.
If device backup is enabled, your operating system or platform backup provider may copy app data stored on the device as part of its own backup service.

ClickBook does not sell personal information and does not share personal information with advertising networks or analytics providers for cross-context behavioral advertising.
When you download the AI model, the hosting provider, content delivery network, and your internet or platform provider may process standard request data such as IP address, timing, and transfer logs under their own privacy terms.
When you download, buy, update, or restore the app or optional paid features, the app store operator (Apple or Google), the platform provider, and the purchase-management provider RevenueCat process technical, entitlement, and transaction-related data, including the anonymous app user identifier, under their own policies.
When platform backup is enabled, the platform provider may retain a copy of backed-up app data under that provider's own policies.
Information may also be disclosed if required to comply with applicable law, lawful requests, or to protect rights, safety, and security.

8. International processing

App distribution platforms, purchase-management providers, backup providers, and model-hosting providers may operate globally. As a result, limited technical data related to downloads, entitlement checks, purchase handling, or backups may be processed outside your country under those providers' own privacy terms.

ClickBook itself is designed so that reading content and tapped-word context are not transmitted to our own servers as part of normal offline reading and explanation use.

9. Data retention

Imported books, reader settings, reading progress, and vocabulary history remain on your device until you delete them, clear the app's data, or uninstall the app.
Local reader files, extracted text, and covers created from imported PDFs remain on your device until you delete the related book, clear the app's data, or uninstall the app.
The downloaded on-device AI model remains on your device until you remove the app or otherwise delete the model data. Because it can always be downloaded again, it is stored in a location the operating system may reclaim when storage runs low, and it is excluded from device and cloud backups so your backups stay small.
Temporary records used to resume interrupted model downloads are kept only as long as reasonably necessary to complete or recover the download, then are replaced or removed.
Purchase entitlement state may remain available to the app or purchase-management provider as long as needed to verify, restore, or manage optional paid features.
Third-party providers such as app stores, purchase-management providers, hosts, content delivery networks, and backup providers keep their own logs and records under their own retention policies.

10. Security

ClickBook relies primarily on device-local storage and the operating system sandbox. The app is designed to avoid unnecessary collection and to keep data local whenever practical.

No mobile app or storage system can guarantee absolute security. You are responsible for securing your device, controlling who can unlock it, and managing backup or sharing destinations you choose to use.

11. Your rights

For privacy questions, requests, or complaints, contact Mohamad Mohamad at [email protected].

Where applicable law gives you rights, you may have rights to access, correct, delete, restrict, object to, or receive a portable copy of personal data, to withdraw consent where processing is based on consent, and to lodge a complaint with your local data-protection authority.
Because ClickBook stores most information locally on your device, many privacy choices can be exercised directly on the device itself by deleting books, clearing app data, adjusting settings, or uninstalling the app.

12. Children's privacy

ClickBook is not specifically directed to children under 13. If minors use the app, parental or guardian supervision is recommended, especially when importing files or using AI-generated explanations.

If you believe personal data relating to a child has been processed in a way that raises a privacy concern, contact the controller identified above so appropriate steps can be taken.

13. Changes and contact

This Privacy Policy may be updated from time to time to reflect changes in the app, legal requirements, or distribution practices. The current version will be made available in the Settings area of the app together with its effective date.

An online version of this Privacy Policy is also published at https://clickbook-ai.com/privacy.html.

Support and frequently asked questions: https://clickbook-ai.com/support.html

Privacy contact: Mohamad Mohamad, [email protected], +49 179 266 4501, Auf der Breite 3, 31515 Wunstorf, Germany