PDF Watch Viewer : WristDocs — Android phone app and Wear OS watch app

Last updated: October 28, 2026

ONNEX YAZILIM ANONIM SIRKETI ("we", "us") operates the WristDocs apps for Android and Wear OS (the "App"). This policy explains what data the App processes, why, who processes it for us, and the choices you have. It applies only to the Android and Wear OS apps; the iOS app has its own privacy policy.

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In short: You don't create an account. The App uses a random app ID instead of your name or email. Your documents are stored on your phone and watch, and on our servers only as needed to deliver them to your watch. Optional features send data to service providers that work for us: file conversion (CloudConvert) and AI summaries and questions (OpenAI, only after you agree). We use analytics and crash reports to improve the App, and we measure which of our Google ads lead to installs and purchases. We do not show ads in the App and do not sell your data.

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1. App ID (no account)

When you first open the App, it signs in anonymously with Firebase Authentication. This creates a random User ID, which you can see in Settings › About. We use it to link your documents, purchases, AI usage limits and analytics to your installation. We do not ask for your name, email address or phone number.

2. Your documents

• On your devices: Documents you add are stored on your phone and, when you send them, on your paired watch. Removing the App removes these copies.
• On our servers: To deliver a document to your watch and show previews, the App uploads the document's pages as images to our server (hosted on Railway) and cloud storage (Google Cloud Storage via Firebase). They are linked only to your User ID and are not visible to other users. You can ask us to delete them at any time (see section 10).
• File conversion: When you add a Word, Excel, PowerPoint or EPUB file, it is sent to our conversion service and converted to PDF by CloudConvert (Germany). CloudConvert deletes the files after conversion, at the latest within 24 hours. A technical job record without the file content is deleted after 7 days.
• Processed only on your device: Photos, text files, notes and camera scans are turned into PDFs on your phone. Camera scanning uses Google Play services' document scanner.
• We never read, index or share your documents for any other purpose.

3. AI summaries and questions (optional)

AI features are optional and only work after you allow them in the App. When you create a summary or ask a question:

• the text extracted from that document (up to a size limit), your question and recent messages of that chat are sent to our server (Google Cloud Functions, EU region) and to OpenAI to generate the answer;
• OpenAI does not use this data to train its models and may keep it for up to 30 days for abuse monitoring; we send OpenAI a one-way hashed identifier, never your User ID;
• our servers do not store your document text, questions or answers. They store usage counters (how many questions you used) linked to your User ID; daily counters are deleted after 3 days;
• chat history and summaries are stored only on your phone, and summaries or answers you request from the watch are shown on the watch.

If you report an answer or summary from the App, we store the reported text, the question it answered, the reason you chose, the app version, language and your User ID for up to 180 days to review it and improve our filters.