Privacy Policy

What the app does not have

• No account, no sign-up, no password.
• No advertising, no trackers, no usage analytics.
• No profile, and no history of your searches or your routes anywhere but on your phone.
• No data sold, rented or passed to anyone for commercial purposes.

Your location

With your permission, the app reads your location to center the map and to use as the starting point of your routes. It stays on your phone. You may refuse that permission: the app then works from a point you choose on the map.

To build a route, it needs the paths and terrain of the area. The app therefore asks for the data of an area around that point, a rectangle several kilometers across, and never your exact position. The servers contacted see an IP address and a geographic area, for the duration of the request, with no identifier attached.

The name of the starting place is the exception, and it deserves its own sentence. When the app writes “start at 9 Rue Monfroux”, it asked your phone's map service for that name, sending it the coordinates of that single point. It is the only time a precise position, rather than an area, leaves the device, and it is to show it to you.

Services contacted

The first on the list is ours. The others are public services, or your phone's own.

• Trailgen's file service : hosted on Cloudflare. It receives the area the app needs, and nothing else: no account, no identifier, no cookie. Like any web server, it logs access, with the IP address.
• Overpass API : OpenStreetMap paths, on public instances.
• The IGN : elevation in France and its territories.
• AWS Open Data : elevation in the rest of the world.
• Apple Maps : on iPhone, the base map and the name of the starting place.
• Google Maps : on Android, the base map and the name of the starting place.

Each has its own privacy policy. The app sends them no account, no identifier and no history.

The purchase, and the review prompt

Trailgen is bought once, on the App Store or on Google Play. Payment happens entirely with them: we see neither your payment method, nor your name, nor your address. We receive aggregated sales reports, in which nobody is identifiable.

The app sometimes offers to leave a review. The dialog that opens is the system's, not ours, and we do not learn whether you answered it.

What stays on your phone

• your saved routes, with their track and name;
• the paths and terrain of areas already visited, so later searches are fast and work offline;
• two settings, one recording that the introduction has been seen, the other that a review prompt has already happened.

None of it leaves the device. The About screen reports how much space the stored paths and terrain take, and lets you clear them; your saved routes are not affected by that. Deleting the app deletes all of it.

Sharing a route

When you export a route as GPX, the file goes where you send it: your watch, another app, a message. An image or a video of the route follows the same rule. The app keeps no copy and sends them nowhere on its own.

Children

The app asks for no age, no name and no address, and builds no profile. It therefore collects nothing concerning children.

Your rights

We hold no data about you. There is no account, no database and no backup: nothing to consult, correct, export or delete on our side, and so nothing to request.

The data that concerns you is on your phone, and it is yours to manage: a saved route is deleted from the list, stored areas are cleared from the About screen, and uninstalling the app erases everything. If a question remains, write to us.

Changes to this page

Any change will be published here, with its date.

Contact

A question about this page, or about the app: alexis.leb@icloud.com