Last updated: October 2, 2026
Summary
Baliseur does not collect, transmit, or sell any personal data. Everything you record — sections, marks, tournées, notes and photos — is stored only in the app's local storage on your own device. Nothing is uploaded anywhere unless you personally choose to share a report or a photo using your device's own Share sheet.
What Baliseur stores, and where
- Trail sections, marks, tournée logs and notes — kept in a local database file inside the app's private storage on your device. Never transmitted to us or to any third party.
- Photos you take or attach — kept inside the app's private storage, and in your device's Photos library only if you explicitly choose "Save Image". Never uploaded anywhere.
- Preferences — your name, your coordinator's first name, your appearance choice and haptics setting, kept in the device's standard app preferences storage (
UserDefaults). Never transmitted anywhere.
Permissions Baliseur may ask for
- Camera — used only when you choose to photograph a mark while logging a tournée. The photo stays on your device.
- Photo Library — used only when you choose to attach an existing photo to a mark, or to save a mark's photo back to your library.
- Notifications — used only to remind you, locally on your device, that a tournée is due or that a flagged mark needs attention. These reminders are generated and delivered entirely on your device; no server is involved and nothing about your schedule is sent anywhere.
Each permission is requested only at the moment it's needed, and you may decline any of them — Baliseur keeps working, simply without that feature.
What Baliseur never does
- No account creation or sign-in of any kind.
- No analytics, crash reporting, or usage-tracking SDKs.
- No advertising, and no advertising identifiers are read or generated.
- No location tracking or GPS logging.
- No data is sold, rented or shared with any third party, for any purpose.
- No data leaves your device automatically — ever. The only way information leaves the app is if you tap Share yourself to export a season report or a photo through the system share sheet, at which point it is governed by whatever destination you personally choose (Messages, Mail, saving a file, etc.).
Children's privacy
Baliseur is a professional field tool for volunteer trail maintenance and is not directed at children. It does not knowingly collect any information from anyone, of any age, because it does not collect information at all.
Data retention and deletion
All data lives exclusively on your device for as long as the app is installed. Deleting Baliseur deletes all of its data with it. You can also erase your field book at any time from Settings → "Erase and reload the GR 34 example", which replaces everything with the demo section.
Changes to this policy
If this policy changes, the updated version will be published at this same address with a new "Last updated" date.
Contact
Questions about this policy or how Baliseur handles information can be sent through the contact form on our support page.