1. Exact storage inventory
- IndexedDB: sessions, reduced pose series, optional video blobs, internal metadata, bike profiles and bike journal records.
- localStorage: current-session pointer, unit preference, calculator shortcut, legal acceptance receipt, offline-mode choice, install-hint state and explicitly saved workflow drafts.
- sessionStorage: temporary calculator-to-camera handoff and other documented same-tab transfers.
- URL fragment: calculator measurements and some opaque local record identifiers may appear after #. Fragments are not sent in an HTTP request, but your browser may keep them in local history.
- Cache Storage and Service Worker: absent by default. After explicit opt-in, only the public shell, static assets and same-origin pose runtime/model may be cached. Query-bearing URLs, API responses and protected workflow documents are excluded.
The application does not intentionally place symptoms or other health inputs in these stores. A migration removes retired health-intake fields and their derived outputs.
2. Why choices are separated
Storage needed for the particular interactive service you request is activated after the pre-contract terms and local-processing choices. Offline caching is a separate optional feature and stays off until you press Enable offline mode in Settings. The classification follows the necessary-service exception in Article 399(3) of Poland's Electronic Communications Law; it is not a claim that all first-party technology is automatically exempt.
3. Controls and expiry
Settings & privacy shows counts for every IndexedDB store, exports all known local data and performs verified deletion across stores, keys, drafts, OpenBikeFit caches and registrations. Disabling offline mode unregisters the Service Worker and deletes its caches. Browser settings can also block or clear site storage.
Transfer drafts normally expire after 30 days; sessionStorage ends with the tab or when consumed. Other core local records remain until you delete them. See the privacy notice for purposes, legal bases, recipients, retention and rights.