# Privacy Policy — MarginBookmark
**Last updated:** 2026-06-22
MarginBookmark is a personal reading tracker and home library that lets you catalog your books, log reading progress, and view your reading statistics — entirely on your own device.
## The short version
MarginBookmark does not collect, transmit, or share any personal information. Everything you enter stays on your device.
## Information we collect
None. MarginBookmark has no accounts, no sign-in, and no servers. We do not collect any personal information from you.
## Data stored on your device
The following information is stored locally on your device and never leaves it, except when you explicitly choose to share it (see "Network use" below):
- Your library of books (titles, authors, genres, page counts, ratings, and the dates you added or finished each book).
- Your reading sessions (pages read, time spent, and the date of each session).
- Your reader preferences (yearly reading goal, daily page target, quick-log step, and your preferred library sort order).
- A small boot flag recording whether you have completed the one-time onboarding.
## Permissions
MarginBookmark requests no runtime permissions. It does not access your camera, microphone, location, contacts, or photos.
## Network use
MarginBookmark is fully offline. It makes no network requests and contacts no servers. The only time data leaves the app is when you actively tap a "share" action — at that point your device's standard share sheet hands the text you chose (for example, a book or your library summary) to whatever app you select. MarginBookmark itself never uploads anything.
## Third-party services
None. MarginBookmark integrates no analytics, advertising, crash-reporting, or other third-party SDKs.
## Children's privacy
MarginBookmark collects no data from anyone, including children. Because nothing is collected or transmitted, the app poses no data-privacy risk to children under 13 (COPPA) or under 16 (GDPR-K).
## Your rights and control over your data
All of your data lives on your device and is fully under your control. You can edit or delete any book or reading session at any time within the app. Uninstalling MarginBookmark permanently removes all of its locally stored data from your device.
## Changes to this policy
If this policy changes, the "Last updated" date above will be revised. Material changes will be reflected in an app update.
## Contact
isiniher52@gmail.com
© 2026 MarginBookmark. All rights reserved.