Introduction
Welcome to Just One ("we," "our," or "us"). We are committed to protecting your privacy and ensuring transparency about how we handle your data. This Privacy Policy explains how we collect, use, and safeguard your information when you use our mobile application.
Just One is a personal development app that delivers one daily micro-mission to help you build positive habits. We designed our app with privacy in mind, following a local-first approach.
Developer Information
Developer: Edax Tecnologia
App: Just One
Contact: [email protected]
Data We Collect
Data Stored Locally (On Your Device)
The following data is stored only on your device and is not transmitted to our servers unless you choose to create an account for cloud sync:
- User Preferences: App settings, notification preferences, difficulty levels
- Quiz Responses: Your answers to the initial personality quiz
- Mission History: Completed missions, progress tracking, streaks
- Custom Cards: Any personal missions you create
- Local User ID: A randomly generated identifier for your local profile
Data We May Collect (With Your Consent)
If you choose to create an account for cloud synchronization, we collect:
- Email Address: For account authentication (if using email sign-in)
- Social Login Data: Basic profile info from Google/Apple (name, email) if you use social sign-in
- Synced App Data: Your progress and preferences, encrypted and stored securely
Automatically Collected Data
- Crash Reports: Anonymous crash logs to help us fix bugs (via Sentry)
- Analytics: Anonymous usage patterns to improve the app (via PostHog)
- Device Information: Device type, OS version for compatibility purposes
How We Use Your Data
We use collected data to:
- Provide and personalize your daily missions
- Track your progress and maintain streaks
- Send daily reminder notifications (if enabled)
- Sync your data across devices (if you create an account)
- Improve app stability and fix bugs
- Understand usage patterns to improve features
Data Sharing
We do not sell, trade, or rent your personal information. We may share data with:
- Supabase: Our backend provider for secure data storage (if you create an account)
- Sentry: For anonymous crash reporting
- PostHog: For anonymous product analytics
All third-party services we use are GDPR-compliant and follow industry-standard security practices.
Data Security
We implement appropriate security measures to protect your data:
- Local data is stored securely on your device using encrypted storage
- Cloud data is encrypted in transit (TLS) and at rest
- We use Row Level Security (RLS) to ensure you can only access your own data
- Authentication is handled through secure OAuth providers or encrypted email/password
Data Retention & Deletion
Local Data: Stored on your device until you uninstall the app or clear app data.
Cloud Data: If you have an account, your data is retained until you request deletion. You can delete your account and all associated data at any time through the app settings.
Analytics Data: Anonymized analytics are retained for up to 24 months to help us understand long-term usage patterns.
Your Rights
You have the right to:
- Access: Request a copy of your data
- Correction: Update or correct your information
- Deletion: Delete your account and all associated data
- Portability: Export your data in a standard format
- Opt-out: Disable analytics or notifications at any time
To exercise these rights, contact us at [email protected].
Children's Privacy
Just One is designed for users of all ages. We do not knowingly collect personal information from children under 13 without parental consent. The app can be used entirely offline without creating an account, ensuring children can benefit from daily missions without any data collection.
If you believe a child under 13 has provided us with personal information, please contact us immediately so we can delete it.
Permissions
The app requests the following permissions:
- Notifications: To send daily mission reminders (optional, you can disable anytime)
- Vibration: For haptic feedback on interactions
We only request permissions that are necessary for core app functionality.
Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of significant changes through the app or by updating the "Last updated" date. Your continued use of the app after changes constitutes acceptance of the updated policy.
Contact Us
If you have questions or concerns about this Privacy Policy or our data practices, please contact us:
Email: [email protected]
Developer: Edax Tecnologia