Your device
Cookies and device storage
DataStride uses no advertising cookies and no third-party analytics. Everything below is either needed to sign you in and keep you secure, or remembers a choice you made. None of it is shared with other sites.
| What | Where | Why | How long | Type |
|---|---|---|---|---|
| Sign-in session | IndexedDB (firebaseLocalStorageDb) | Keeps you signed in between visits. Set by Firebase Authentication. | Until you sign out | Strictly necessary |
| Security check | Cloudflare Turnstile | Tells people from automated sign-ups on the registration page. Loaded only there. | The page visit | Strictly necessary |
| Your drafts and history | localStorage, ds_account_… | Unsaved answers, solved markers and recent queries, scoped to your account so another person on the same device cannot read them. Cleared when you sign out. | Until you sign out | Functional |
| Session mirror | localStorage, ds_session_v1_… | A copy of where you were, so the app reopens there instantly even before the server answers. | Until you sign out | Functional |
| Theme and motion | localStorage, datastride-theme, datastride-motion | Light or dark theme, and whether to reduce animation. | Until you change it | Functional |
| Tour and notices | sessionStorage, ds_tour_shown_…, ds_restore_announced | Stops the same walkthrough or notice appearing twice in one browser tab. | Until the tab closes | Functional |
Optional processing — product analytics, AI memory, email reminders and a public profile — happens on our servers, not your device, and each is off until you turn it on in your privacy choices. See the privacy notice for everything else.