English
1. Overview
This Privacy Policy explains how expenseCal (the "App") collects, uses, and retains user data. The App is designed and operated by RaIN (contact email: privacy@rainsday.com). By using the App, users agree to the data practices described in this Policy.
2. Categories of Data Collected
The App collects the following categories of data:
- Account identifiers: Google account user ID (uid), email address, and push notification token.
- User content: group names, member lists, member avatars, expense details, shopping or request lists, settlement records, and to-do items.
- Receipt OCR outputs for Pro features, such as recognized amounts and categories. Receipt recognition uses on-device Apple Vision OCR.
- Subscription information: Apple subscription receipts, product identifiers, subscription period, and auto-renewal status.
The App does not collect location data, health data, browsing history, contact lists, IDFA, or full photo library contents. Original receipt images are not uploaded to the server for OCR processing.
3. How Data Is Used
- To provide expense splitting, settlement, and group management.
- To synchronize user data across devices.
- To send account, group activity, and app-function notifications.
- To verify and manage Pro subscription status.
- To respond to support requests and user inquiries.
4. Data Storage and Third-Party Services
User data is stored or processed through these services:
- Firebase Firestore (Google LLC): database storage for groups and expense records.
- Firebase Cloud Storage (Google LLC): image storage for member and group avatars.
- Firebase Authentication (Google LLC): account authentication.
- Firebase Cloud Messaging (Google LLC): push notifications.
- Apple StoreKit (Apple Inc.): in-app purchase processing.
- RevenueCat (RevenueCat, Inc.): subscription status management.
5. International Data Transfers
Firebase service servers are primarily located in the United States and the European Union. Data collected by the App may be transferred outside Hong Kong for storage and processing.
6. Data Retention
- User account data is retained until the user requests deletion.
- Deleted groups or expenses are permanently removed from Firestore within 30 days.
- Subscription receipts are retained according to Apple and legal requirements.
- Push notification tokens are cleared when the user signs out.
7. User Rights
Users may access, edit, delete, and export their data. Most data can be reviewed or edited directly in the App. To request export, deletion assistance, or other privacy-related help, email privacy@rainsday.com. We usually respond within 7 business days.
8. Children's Privacy
The App is not designed for children under 13 and does not knowingly collect personal data from children. If a parent or guardian believes a child has provided personal data, please contact us so the data can be removed.
9. Advertising and Tracking
- The App does not display advertising.
- The App does not use third-party tracking SDKs.
- The App does not perform cross-app advertising tracking or collect IDFA.
- The App does not sell or rent user data to third parties.
- The App does not use user data to train artificial intelligence or machine learning models.
10. Subscription Terms
Pro subscriptions are processed through the Apple App Store. Plans auto-renew unless cancelled at least 24 hours before the end of the current billing period. Users may cancel at any time in iPhone Settings under Apple ID subscriptions. After cancellation, Pro access remains available until the end of the current period.
11. Policy Changes
This Policy may be updated when features or legal requirements change. Important changes will be communicated in the App. The latest version is shown in the App and on this page.
12. Contact
For questions, data requests, or privacy concerns, contact privacy@rainsday.com.