How Tracking Works
Everything happens in your browser — no accounts, no servers, no data leaves your device.
LocalStorage – Your Private Streak Database
We use the browser's built-in localStorage to save your progress. This is the same technology websites use to remember your dark mode preference or shopping cart.
- Your start date, completed days, missed days, and notes are stored only on this device.
- Each experiment has its own unique key (e.g., "no-sugar-30day").
- No login, no email, no cookies that track you across sites.
- Data never goes to us or any third party — it's impossible for us to see it.
What Gets Saved
- startDate: The day you began (UTC midnight)
- completed: Array of day numbers you marked done
- missed: Array of day numbers you explicitly marked missed
- notes: Optional text notes per day
Nothing else — no personal info, no IP address, no device fingerprinting.
What Happens If You Clear Browser Data?
Your streaks reset — that's the trade-off for total privacy. No way around it, since we never store anything on our end.
Tip: Export your summary (txt file) before clearing cache or switching devices.
Why No Accounts or Cloud Sync?
- To eliminate any possibility of data collection or breaches.
- To keep things simple — no passwords to remember.
- To make the site instant (no loading spinners, no sign-up friction).
If you ever want multi-device sync, export/import your JSON data manually (future feature idea).