Privacy Policy
Last updated: September 1, 2026
Introduction
ChainFlow ("we," "our," or "us") respects your privacy. This Privacy Policy explains how we collect, use, and protect your information when you use our mobile application.
Information We Collect
Account Information
- Sign in with Apple: When you choose to sign in, we receive your Apple ID and email address (if shared) to enable cloud sync features.
- User ID: A unique identifier to sync your data across devices.
App Usage Data
- Workout Chains: Your custom timer sequences and saved routines (stored locally and in cloud if you're a Pro user).
- App Preferences: Settings like sound themes, visual themes, and configuration preferences.
Analytics
- Firebase Analytics: Anonymous usage statistics to improve app performance and user experience.
- Purchase Analytics: RevenueCat processes subscription and purchase data to manage Pro features.
Website Analytics
Our website (chainflow.app) uses Google Analytics to understand how visitors find and use the site — for example, which pages are viewed and which links are clicked, such as taps on our "Download" buttons. Google Analytics uses cookies and similar technologies and may collect information such as your IP address, browser type, and general location. We do not use this data to identify you personally. You can opt out of Google Analytics tracking using the Google Analytics Opt-out Browser Add-on, or by using your browser's tracking/cookie controls.
How We Use Your Information
- Sync your workout chains across devices (Pro users only)
- Provide customer support when you contact us
- Process in-app purchases and subscriptions
- Improve app performance and add new features
- Ensure app security and prevent fraud
Information Sharing
We do not sell or rent your personal information. We only share data with:
- Apple: For Sign in with Apple authentication
- Firebase/Google: For cloud storage and analytics (Pro users)
- RevenueCat: For subscription and purchase management
Data Storage & Security
- Your data is stored securely using industry-standard encryption
- Cloud data is stored in Firebase with secure access controls
- We retain data only as long as necessary to provide services
Your Rights
- Access: Request a copy of your data
- Delete: Request deletion of your account and data
- Opt-out: Disable analytics in iOS Settings > Privacy
- Sign Out: Remove cloud sync by signing out in app settings
Children's Privacy
ChainFlow is not directed to children under 13. We do not knowingly collect personal information from children under 13.
Changes to This Policy
We may update this Privacy Policy occasionally. We will notify users of significant changes through the app or our website.