Privacy
Weight Tracker Daily is a small, personal-use tool. The short version: your data is yours, it is stored only so the app can show it back to you, and you can export or permanently delete all of it yourself at any time.
What is stored
- Your entries: dates, weights, optional waist measurements, activity notes, free-text notes, and day tags (e.g. Illness, Travelling).
- Your profile metrics: date of birth, gender, height, target weight, and optional neck/hip measurements — used only to compute BMI, body-fat estimates, and healthy ranges on your own screen.
- Progress and outfit photos you choose to upload (compressed on your device before upload).
- App preferences: units, chart settings, theme, weigh-in clothing profiles.
Where it lives
- Account data is stored in Google Firebase — Realtime Database and Cloud Storage in the europe-west1 region (EU). Security rules restrict every piece of it to your signed-in account; there is no shared or public data.
- Signing in uses Firebase Authentication (Google, email/password, phone, or anonymous guest).
- If you use the optional ✨ Insights feature, a compact summary of your recent entries is sent — only when you press the button — to Google's Gemini API via Firebase AI Logic to generate the text you see. It is not used for anything else by this app.
What is NOT here
- No analytics, no trackers, no ad networks, no cookies beyond what Firebase sign-in itself requires.
- No selling or sharing of your data with third parties.
- No server-side code of ours reading your data — the app is a static page; your browser talks directly to Firebase under your own account.
On your device
The app keeps local copies (browser storage) of your recent data so it works offline: your entries cache, queued offline changes, photo thumbnails' addresses, and the last AI-insights text. Signing out clears the caches for that account; queued unsaved changes are kept so they can sync when you sign in again.
Export and deletion
- Export: About → Export JSON / Export CSV gives you everything in open formats.
- Delete: About → “Delete my account…” permanently removes your entries, photos, preferences, and the account itself — self-service, no email required, no copies kept.
Contact
Questions or concerns: mh [at] mirzazadeh.dev