Cookie policy
Last updated 8 November 2026
Thallo doesn't use cookies. It doesn't use advertising, analytics or tracking either. To work fast and offline, it saves a few items in your browser's storage. They stay on your device and are never used to follow you around the web.
Always on (needed for the app to work)
| Item | What it's for | How long |
|---|---|---|
Sign-in session (sb-…-auth-token) | Keeps you signed in | Until you sign out |
Your garden (thallo.v1, thallo.owner) | Your plants on this device, so the app opens instantly and works offline | Until you sign out or reset |
Your city (thallo.prefs) | Remembers your city for the weather | Until you clear it |
Your choices (thallo.consent, thallo.sound, thallo.look, thallo.view, thallo.agreedBeforeSignIn) | Your privacy choice, sounds, theme and language, how My plants is sorted, and that you accepted the terms while signing up with Google | Until you clear it |
Help and invites (thallo.guide, thallo.tips, thallo.ref) | Whether you saw the welcome tour and each tip, and a friend's invite until your account can claim it | Until you clear it |
Waiting work (thallo database, thallo.readyScans) | Photos taken offline, sent when you're back online | Until they're sent |
| Offline copy (service worker cache) | The app's own files, so it works without a connection | Until the next update |
Page transition (thallo.transition) | The little animation between pages | Until you close the tab |
Only if you allow it
| Item | What it's for | Who |
|---|---|---|
| Error reports | When something breaks, technical details (no name or email) so we can fix it | Sentry |
Your choice
The first time you open Thallo, we ask whether to allow error reports. "Essential only" and "Allow error reports" are equally easy to pick, and the app works the same either way. Change your mind at any time in Settings → Privacy choices. You can also clear everything in your browser's site settings.