Where things are kept
On the device: the logbook with tracks, the boats, the checklist marks, the handover photos, the documents, favourite phrases, learning progress, downloaded packs and the map and weather cache. All of it opens offline.
On the server (only with an account): the profile, messages, clubs, trainings, your position on the map with the precision you chose, and the link between activation codes and the account.
Clearing
Settings → Clear the cache — the weather cache and temporary files. The logbook, photos and packs stay.
Offline downloads → Delete all downloads — frees space, the content stays available online.
Settings → Delete local data — erases everything kept on the phone: the database, handover and document photos, the avatar, the map cache and offline packs, the secure storage and the screen state. The account itself stays.
Deleting the account
“Profile → Delete account”. The profile, messages, clubs and the position on the map are removed on the server, and the app erases the local data and returns to the first-run screen.
The details are in the documents: “More → Documents → Privacy policy”, “Location data” and “Account deletion”. All the texts open offline.