Privacy Policy

Last updated: January 1, 2026

crelve ("we", "us", or "our") has established this Privacy Policy ("Policy") regarding the handling of user personal information in the mobile application "SleepLog AI" ("App").

1. Information We Collect

We may collect the following information when you use the App.

1.1 Information You Provide

• Sleep records (bedtime, wake time, sleep quality, morning mood)
• App settings and preferences

1.2 Automatically Collected Information

• Device information (device type, OS version, unique identifiers)
• Usage data (app usage frequency, feature usage)
• Crash logs and error reports

1.3 Local Storage

Your sleep records are stored locally on your device using encrypted storage. This data is not transmitted to our servers.

2. How We Use Information

We use collected information for the following purposes:

1. Providing and operating the App services
2. Generating AI-powered sleep advice
3. User support
4. Improving the App and developing new features
5. Analyzing usage patterns
6. Preventing unauthorized use

3. Third-Party Services

The App uses the following third-party services. These services collect and use information according to their respective privacy policies.

Service	Provider	Purpose	Privacy Policy
Firebase Analytics	Google LLC	Usage analytics	Link
Firebase Crashlytics	Google LLC	Crash reporting	Link
Firebase AI (Gemini)	Google LLC	AI advice generation	Link
Google AdMob	Google LLC	Ad delivery	Link
RevenueCat	RevenueCat, Inc.	Subscription management	Link

3.1 About Advertising

The App uses Google AdMob to deliver advertisements. AdMob may use advertising identifiers and cookies to deliver personalized ads.

To disable personalized ads, enable "Limit Ad Tracking" or "Opt out of Ads Personalization" in your device settings.

4. Information Sharing

We do not share your personal information with third parties except in the following cases:

1. When you have given consent
2. When required by law
3. When necessary for the protection of life, body, or property
4. Sharing with service providers listed in "Third-Party Services" above

5. Data Storage

Sleep records are stored locally on your device using encrypted storage. We retain automatically collected usage data for the period necessary for service provision or until you delete your account.

6. Data Security

We implement industry-standard security measures to protect collected information. However, no method of transmission over the Internet or electronic storage is 100% secure.

7. Your Rights

You have the following rights:

• Access: Request access to your personal information we hold
• Correction: Request correction of inaccurate personal information
• Deletion: Request deletion of your personal information
• Data Portability: Request a copy of your personal information

To exercise these rights, please contact us at the address below.

8. Children's Privacy

The App is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. If we learn that we have collected personal information from a child under 13, we will delete it promptly.

9. Changes to This Policy

We may change this Policy as necessary. If there are significant changes, we will notify you through the App or other means. The revised Policy becomes effective upon posting on this page.

10. App Tracking Transparency

On iOS 14.5 and later devices, the App will request permission before tracking your activity. You can continue to use the basic features of the App even if you do not allow tracking.