Privacy Policy — epilogue

epilogue ("the app", "we", "our") is a personal book-tracking app published by oturk1. This policy explains what data the app handles, where it lives, and what we do (and don't do) with it. It applies to the Android version of the app distributed via Google Play.

TL;DR

What data the app handles

The app stores the following on your device, locally:

• Books in your library (title, author, dates, ratings, reviews, notes, tags, cover URLs, page count, audiobook duration, playback speed, re-read count, source, quotes).
• Books on your TBR (to-be-read) list.
• Your daily reading log (which books you read, pages or minutes per session, notes).
• App preferences (theme, view mode, rating style, sort order, format filter, monthly/yearly reading goals, tutorial seen-flags, your name).

This data does not leave your device unless you explicitly:

1. Enable Google Drive sync (see below), or
2. Export a backup file (CSV or JSON) and share / save it via your device's share sheet.

Google Drive sync (optional)

If you sign in to Google Drive from the app's Sync settings, the app uploads a single JSON snapshot of your data to a hidden application folder inside your Google Drive (appDataFolder scope). This folder is private to the epilogue app — it isn't visible in your normal Drive UI and other apps cannot read it.

• We do not have access to your Drive or your data.
• We do not store your OAuth tokens on our servers — they live in your device's secure keystore.
• You can disconnect at any time via Settings → Sync → Disconnect Drive. To delete the remote snapshot entirely, use the "Reset everything" option, or revoke the app from your Google account at drive.google.com → Settings → Manage apps.

The OAuth flow uses Google's standard authorization endpoints. We request only the drive.appdata scope.

What data we do not collect

• Email addresses, phone numbers, real names beyond what you type for display.
• Crash reports, analytics events, page-view tracking, advertising identifiers, location data.
• Anything from your camera, microphone, contacts, or photo gallery beyond what you explicitly pick (book cover photos, ISBN barcode scans). Permission prompts only fire when you tap the relevant feature.

Network requests

The app contacts these third-party services on your behalf, and only when you trigger an action that needs them:

• Google Books API and Open Library — to look up cover art, page counts, and genre metadata for books you add. Sends only the book's title, author, or ISBN.
• Google Drive API — only when sync is enabled.

We do not embed any analytics, ad networks, or tracking SDKs.

Children's privacy

The app is not directed at children under 13 and does not knowingly collect any data from them. Since the app collects no data at all, this is true by construction.

Your rights

Because all your data lives on your device (and optionally in your own Google Drive), you control it:

• Export: Settings → Backup & Restore → "Back up to a file"
• Delete locally: Settings → Danger Zone → "Delete ALL books" / "Clear Journal & streaks" / "Reset everything"
• Delete remote Drive copy: Settings → Danger Zone → "Reset everything" (or revoke via Google account settings)

Uninstalling the app removes all local data. The remote Drive snapshot (if any) is not automatically removed by uninstall — use "Reset everything" first if you want the remote copy gone.

Changes to this policy

If the app ever starts collecting data — it currently doesn't and there are no plans to — this policy will be updated and the app will request explicit consent before any change in data handling takes effect.

Contact

Questions about this policy or how the app handles data: open an issue at the app's repository, or contact the developer through the Play Store listing.