Privacy Policy

Last updated: June 8, 2026

At Challenzo, we are committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application and our website.

1. Information We Collect

To provide you with a gamified habit building experience, we collect the following types of information:

  • Account Information: When you register an account, we collect your email address, display name, profile picture, and authentication credentials (including via Google Sign-In).
  • Gameplay & Streak Data: We track your daily challenge logs, streak count, points accumulated, completed challenges, failures, skips remaining, and achievements/badges unlocked.
  • Device Information: We collect hardware model information, operating system version, unique device identifiers, and push notification tokens to send you daily challenge alerts.

2. How We Use Your Information

We use the information we collect to operate, maintain, and improve Challenzo, including:

  • Providing and managing your account and challenge tracking.
  • Compiling stats and updating the Weekly Leaderboard.
  • Sending push notifications to notify you when today's challenge is ready or when a streak is in danger of resetting.
  • Processing ad rewards for skips/re-rolls using Google Mobile Ads SDK.
  • Analyzing usage trends to optimize challenge difficulty and engagement mechanics.

3. Sharing of Your Information

We do not sell your personal data. We may share your information only in the following contexts:

  • Leaderboard Visibility: Your display name, current streak, points, and badges are visible to other users on the global and friends leaderboards.
  • Service Providers: We use third-party platforms like Firebase (Authentication, Cloud Messaging, Firestore) to host our data and run backend services.
  • Advertising Partners: We serve rewarded/interstitial ads through Google Mobile Ads, which may collect advertising IDs to deliver personalized ads.

4. Data Security & Retention

We implement robust security measures to protect your account data. We retain your account and challenge tracking information for as long as your account is active. You can request account deletion at any time in the app settings, which will permanently delete your authentication record and streak history from our servers.

5. Contact Us

If you have any questions or feedback about this Privacy Policy, please contact us at hello@challenzo.com.