Privacy Policy

Effective Date: February 10, 2026
Last Updated: February 10, 2026

CheckOnce (“we”, “our”, or “us”) respects and protects user privacy. This Privacy Policy explains how we collect, use, and safeguard your personal information.

1. Information We Collect

1.1 Information We Collect

• Username: Your display name (2-50 characters)
• Emergency Contact Emails: Used to send 48-hour inactivity notifications
• Check-in Timestamps: Records of each check-in time
• Device Information: Device type, OS version (for technical support)
• Subscription Status: Your Premium subscription information (if applicable)

1.2 Information We Do NOT Collect

• ❌ Your location data
• ❌ Your contacts/address book
• ❌ Your photos or files
• ❌ Your browsing history
• ❌ Any sensitive personal information

2. How We Use Your Information

2.1 Purpose of Data Collection

Your information is used solely for:

1. Providing Core Services:

   • Recording your check-in status
   • Sending email notifications after 48 hours of inactivity

2. Account Management:

   • Managing your username and emergency contacts
   • Processing Premium subscriptions

3. Technical Support:

   • Responding to your questions and feedback
   • Fixing technical issues

2.2 Email Notifications

• Trigger Condition: 48 hours after last check-in
• Recipients: Only your designated emergency contacts
• Email Content:
  • Your username
  • Last check-in time
  • Friendly reminder (may just be forgotten check-in)
• Frequency: Maximum 1 email per 48-hour cycle

3. Information Sharing

3.1 We Do NOT Sell Your Data

We never sell your personal information to third parties.

3.2 Limited Third-Party Services

We use the following trusted third-party services:

These service providers commit to strict privacy and security standards.

3.3 Legal Requirements

We may be required to disclose your information only in the following situations:

• Complying with legal processes (e.g., court orders)
• Protecting our legitimate interests
• Preventing fraud or abuse

4. Data Security

4.1 How We Protect Your Data

• 🔒 Transmission Encryption: All data transmitted via HTTPS encryption
• 🔒 Storage Encryption: Sensitive data encrypted in database
• 🔒 Access Control: Only authorized personnel can access servers
• 🔒 Regular Backups: Daily automatic backups to prevent data loss

4.2 Data Retention

• Active Accounts: Data retained permanently (until you delete your account)
• After Account Deletion: All data permanently deleted within 30 days
• Check-in History: Retained for the most recent 1 year

5. Your Rights

5.1 Access and Control Your Data

You can always access the following in the app:

• ✅ View your username and emergency contacts
• ✅ Edit your username
• ✅ Add/remove emergency contacts
• ✅ View check-in history

5.2 Delete Your Account

You can delete your account at any time:

1. Open app settings
2. Tap “Delete Account”
3. Confirm deletion

Consequences of Deletion:

• ⚠️ All data will be permanently deleted, including:
  • Username
  • Emergency contacts
  • Check-in history
  • Subscription status
• ⚠️ This action cannot be undone

5.3 Premium Subscription Refunds

• Deleting your account does not automatically cancel Google Play subscriptions
• Please manually cancel subscription in Google Play
• Refund policy follows Google Play regulations

6. Children’s Privacy

CheckOnce is not intended for children under 13 years old. We do not knowingly collect personal information from children. If you discover that a child has provided us with personal information, please contact us and we will delete it immediately.

7. Cookies and Tracking Technologies

7.1 Mobile App

The CheckOnce mobile app does NOT use cookies or tracking technologies.

7.2 Website (checkonce.app)

Our website may use basic analytics tools (such as CloudFlare Analytics) to understand traffic, but does NOT track your personally identifiable information.

8. Privacy Policy Updates

8.1 Update Notifications

We may update this Privacy Policy from time to time. For significant changes, we will:

• Notify you in the app
• Update the “Last Updated” date on this page

8.2 Your Consent

Continued use of CheckOnce indicates your acceptance of the latest Privacy Policy.

9. Contact Us

If you have any questions or concerns about privacy, please contact us:

• Email: privacy@checkonce.app
• Website: https://checkonce.app
• Response Time: Usually within 48 hours

10. Data Transfer

Our servers are located in the United States (AWS us-east-1). By using CheckOnce, you consent that your data may be processed and stored in the United States. We comply with applicable data protection laws.

11. Third-Party Links

CheckOnce may contain links to third-party websites (such as Google Play). We are not responsible for the privacy practices of these websites. Please review their respective privacy policies.

Summary

✅ We only collect necessary information
✅ We do not sell your data
✅ You can delete your account at any time
✅ We implement strict security measures

Thank you for using CheckOnce!

CheckOnce Team
Check once a day, stay connected always