Privacy Policy
Last updated: June 2, 2026
Overview
echo is a mood tracking app designed to be anonymous by default. We do not collect your name, email address, or any information that could identify you as a person. This policy explains what data we do collect and why.
What we collect
- Anonymous user ID — a randomly generated identifier stored locally on your device. It is never linked to your name, email, or any personal account.
- Mood entries — the mood score you log (a number from 1–7), an optional context tag (Work, Home, Social, Health), and a timestamp. No text, notes, or personal descriptions.
- Approximate location — when you log a mood, your GPS coordinates are slightly randomised (±~2.5 km) before being stored. This means your exact location is never recorded. Location is used only to place your anonymous dot on the community map.
- Saved Sparks — quotes you bookmark are stored only on your device using local storage. They are not uploaded to our servers.
What we do not collect
- Name, email address, or phone number
- Account credentials of any kind
- Photos, contacts, or microphone data
- Precise GPS location
- Any data from children under 13
How we use your data
- To display your mood history, streaks, and statistics within the app — visible only to you.
- To place your anonymous mood dot on the community map, visible to other users without any identifying information.
- To show community-level mood trends (e.g. average mood in your region today).
- To select a relevant daily Spark quote based on your mood from the previous day.
Data storage
Mood data is stored in Google Firebase Firestore, a cloud database operated by Google LLC. Data is stored in the EU region where possible. Firebase's privacy policy is available at firebase.google.com/support/privacy.
Your anonymous user ID and saved Sparks are stored locally on your device and are not transmitted to any server.
Data retention
Mood entries are retained as long as you use the app. You can delete your data at any time by contacting us. Because entries are anonymous, we use your local user ID to identify your data for deletion — please include it in your request (visible in app Settings).
Third-party services
- Google Firebase — database and infrastructure. Google Privacy Policy
- Expo / EAS — app distribution and updates. Expo Privacy Policy
Children's privacy
echo is not directed at children under the age of 13. We do not knowingly collect any data from children. If you believe a child has used the app, please contact us and we will delete the associated anonymous data.
Your rights
You have the right to request deletion of your anonymous mood data at any time. Since we do not hold personal information, we cannot identify users by name or email — please use your in-app user ID when contacting us.
Changes to this policy
We may update this policy from time to time. The date at the top of this page reflects the most recent revision. Continued use of the app after changes constitutes acceptance of the updated policy.
Contact
Questions about this policy? Contact us at [email protected].