ChamLensPrivacy Policy
Last updated: March 29, 2026
ChamLens ("we", "our", or "the app") is a mobile expense tracking application developed by Renerp Dev. This Privacy Policy explains how we collect, use, and protect your information when you use ChamLens.
Summary
ChamLens is a local-first app. Your expense data, receipts, and financial records stay on your device. We collect minimal account data for authentication and optional features like push notifications. We do not sell your data or use third-party analytics.
Information We Collect
Account Information
When you create an account, we collect:
- Name — from your Apple or Google account, or as entered during sign-up
- Email address — used for authentication
- Avatar image URL — from your Apple or Google account (if provided)
This information is stored on our authentication provider (Supabase) and used to personalize your experience.
Profile Preferences
We store the following preferences on our server so they persist across device changes:
- Display name
- Preferred currency
- Language preference
Device Information
When you enable push notifications, we collect:
- Push notification token — a unique identifier for delivering notifications to your device
- Device platform — iOS or Android
Merchant Data
When you scan a QR invoice, merchant information (business name, tax ID, category) may be shared with our server to help other users automatically recognize the same merchant. This data is not linked to your personal identity.
Information Stored Only on Your Device
The following data is stored exclusively on your device using a local database and is never sent to our servers:
- Expense records (amounts, merchants, dates, categories, notes)
- Receipt images and extracted text
- Line items
- Categories (custom and default)
- Currency exchange rates
We cannot access, read, or recover this data. If you uninstall the app or clear its data, this information is permanently lost.
How We Use Your Information
We use the information we collect to:
- Authenticate your account and maintain your session
- Display your name and avatar in the app
- Deliver push notifications (if enabled)
- Share merchant reference data across users for automatic QR recognition
- Persist your preferences across device changes
We do not use your information to:
- Display advertisements
- Build user profiles for marketing
- Track your behavior or usage patterns
- Sell or share your data with third parties for commercial purposes
Third-Party Services
ChamLens uses the following third-party services:
| Service | Purpose | Data Shared |
|---|---|---|
| Supabase | Authentication, profile storage, merchant sync | Name, email, avatar, push token, merchant data |
| Apple Sign-In | Account authentication | Name, email (as authorized by you) |
| Google Sign-In | Account authentication | Name, email, avatar (as authorized by you) |
| Expo Push Notifications | Delivering push notifications | Device push token |
Each of these services has its own privacy policy. We encourage you to review them:
Analytics and Tracking
ChamLens does not use any analytics, crash reporting, or tracking services. We do not collect usage data, session information, or behavioral metrics.
Data Security
- All communication with our servers uses HTTPS/TLS encryption
- Authentication tokens are stored in your device's secure storage (iOS Keychain / Android Keystore)
- Server-side data is protected by Row Level Security — each user can only access their own data
- Local data is stored in an SQLite database on your device
Your Rights and Choices
You can:
- Export your data — export all expenses as a CSV file from Settings → Storage → Export CSV
- Delete your local data — permanently delete all expenses, receipts, and line items from Settings → Storage → Clear All Data
- Disable notifications — turn off daily reminders from Settings → Reminders
- Sign out — close your local database and return to the sign-in screen
- Delete your account — contact us at hello@renerp.dev to request account deletion
Data Retention
- Account data (name, email, avatar) is retained as long as your account exists
- Push tokens are updated on each app launch and removed when you sign out
- Local data is retained on your device until you delete it or uninstall the app
- Merchant data is retained indefinitely to benefit all users
Children's Privacy
ChamLens is not intended for use by children under the age of 13. We do not knowingly collect information from children under 13. If you believe a child has provided us with personal information, please contact us.
Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of any material changes by updating the "Last updated" date at the top of this page. Your continued use of the app after changes constitutes acceptance of the updated policy.
Contact Us
If you have questions about this Privacy Policy or your data, contact us at:
Email: hello@renerp.dev