Legal
Privacy Policy
Anjin · 按針 · Effective date: May 2026
Anjin is a personal expense tracker. This policy explains what data we collect,
how we use it, and your rights as a user. We believe in plain language — no legal fog.
01
Data we collect
Data you provide
- Account information — email address and display name when you sign up
- Financial data — expenses, income, budgets, and categories you log in the app
- Profile preferences — home currency, country, display name
Data collected automatically
- Location — GPS coordinates are stored only when you log an expense and explicitly allow location access. Location is never collected in the background.
- Usage events — anonymised events (e.g. "expense saved", "auth failed") sent to PostHog for crash and performance monitoring. No personal or financial data is included.
Data we do NOT collect
- We do not sell your data to third parties
- We do not collect contacts, photos, or any data outside the app
- Voice recordings are processed on-device by your OS speech recognition — we never receive or store the audio
02
How we use your data
| Purpose | Data used |
|---|
| Sync your expenses across devices | Financial data, stored in Supabase |
| Show exchange rates | No personal data — rates fetched from open.er-api.com, cached in Supabase |
| OCR receipt scanning | Receipt image processed on-device by Tesseract.js; no image is sent to any server |
| Push notifications (web only) | A device push token may be stored in Supabase and used only for alerts you opted into. The Android app does not currently support push notifications. |
| App improvement | Anonymised usage events via PostHog |
04
Data storage and security
- All financial data is stored in Supabase (hosted on AWS). Row Level Security (RLS) ensures you can only ever access your own data — not other users'.
- Authentication is handled by Supabase Auth. Passwords are never stored in plain text.
- All data in transit is encrypted over HTTPS.
05
Data retention
Your data is retained for as long as your account is active. You can delete your account and all associated data at any time from the Settings screen inside the app.
06
Your rights
You have the right to:
- Access all data we hold about you (export available from Settings)
- Delete some or all of your data without deleting your account (see below)
- Delete your account and all data permanently
- Opt out of analytics (disable in Settings → Privacy)
Delete your data (without deleting your account)
In the Anjin app:
- Single expenses: open History → select an expense → delete. Removed immediately from your account.
- All financial data: Settings → Account → Reset account & start over. Permanently deletes expenses, budgets, income, reminders, and related data. Your email login and account are kept; you will complete onboarding again.
We do not retain deleted expense or budget data. Your email, display name, and account credentials remain until you delete your account.
07
Children
Anjin is not directed at children under 13. We do not knowingly collect personal data from children under 13.
08
Changes to this policy
We will notify you of material changes via the app. Continued use after changes constitutes acceptance of the updated policy.
09
Contact
Questions or requests about your data?