Privacy Policy
Your Privacy Matters
One Habit is designed with privacy at its core. We believe your personal goals and habits are yours alone. This policy explains exactly how (or rather, how little) we handle your data.
Data Storage
Your personal habit data, photos, and preferences are stored locally on your device. If you use the Challenges feature, certain data (challenge name, progress, and optionally a challenge photo) is stored on Google Firebase servers to enable sharing with other participants.
Photos
Photos you choose as trigger images for your personal habit are stored only on your device. If you optionally add a photo when creating a Challenge, that photo is uploaded to Firebase Storage (Google Cloud, USA) and is visible to all participants of that challenge. We do not have access to your photo library beyond what you explicitly select.
Notifications
Push notifications are sent locally by your device to remind you of your habit. No notification data is transmitted to external services.
Analytics
We do not use any analytics or tracking services. Your usage of the app is completely private.
Third Parties
For the Challenges feature, we use Google Firebase (Firestore & Storage). Data processed by Firebase is subject to Google's Privacy Policy. Firebase servers may be located in the United States. We do not share your data with any other third parties.
Challenges — User Content
The Challenges feature allows you to create shared challenges with other people via a private invite code. You are solely responsible for the content (including photos) you upload as part of a challenge. Please do not upload content that is illegal, offensive, or infringes third-party rights. We reserve the right to remove content that violates these guidelines.
In-App Purchases
One Habit offers optional premium features via in-app purchases, processed through Google Play. Purchase transactions are handled entirely by Google and subject to Google's Privacy Policy. We do not receive or store your payment details.
Data Deletion
You can delete all your local data at any time through the Settings menu inside the app. To request deletion of data stored on Firebase (challenges, challenge photos), please contact us at support@onehabit.app.
Contact
If you have any questions about this privacy policy, please reach out at support@onehabit.app.
Your privacy is protected. Your personal habit data stays on your device. Challenge data is stored securely on Google Firebase and is only accessible to challenge participants.
Last updated: March 2026