You choose what stays.
Updated 4 October 2026 · Early access
Essential storage supports the experience you ask for. Optional analytics is a separate choice and is not needed to use the app.
What is saved on this device?
| Storage | Purpose | Duration |
|---|---|---|
| ChatGPT sign-in storage | Authentication, managed by the sign-in provider | Provider-controlled session duration |
| tf-privacy-choice | Your choice and notice version; local storage | Up to 180 days |
| timeless-assets cache | App assets, offline practice, and icons | Until replaced, evicted, or cleared |
| timeless-sync queue | Unsynced learning events; IndexedDB | Until synced or your learning data is deleted |
What we don’t use
No advertising cookies, marketing pixels, fingerprinting, or session recordings are added by this app. Optional usage analytics is not active. You can clear all site data using your browser settings; this may sign you out and remove unsynced practice.