Privacy Policy
Updated 14 Nov 2026
Mây Đèo collects only the data needed to provide cloud forecasts, road conditions and riding groups. This page explains what is collected, why, and your rights, in line with Vietnam’s Decree 13/2023/NĐ-CP on personal data protection.
1. Data we collect
- Account: email, display name and an identifier issued by the sign-in service. If you sign in with Google or Apple we receive the basic profile those services allow.
- Reports you send: incident or cloud type, description, time and location when sent, and a photo if you attach one.
- Device location: used to prioritise cloud spots around you (within 60 km) and to attach to reports once you grant permission. Choosing nearby spots happens on your device; the app only remembers the name of the nearest region (not coordinates) for 24 hours. We explain why before the system asks; declining still leaves the app fully usable.
- Group location: sent only while you turn sharing on in a group; you can turn it off in the app at any time.
- Anonymous technical data: app errors and usage statistics in release builds. No coordinates, email or phone number are sent.
2. How we use it
- To provide cloud forecasts, the map, road reports and riding groups.
- To moderate community content and prevent abuse and spam.
- To improve forecast accuracy and fix app problems.
3. Photos
Photos are compressed and stripped of EXIF metadata (including GPS) on your device before upload. We never upload the original file.
4. Storage and sharing
Data is stored on the infrastructure of the platform providers we use (database, photo storage, sign-in). We do not sell personal data. Public community reports are visible to other users; group location is visible only to members of the same group.
Group location data is short-lived and is deleted when the trip ends or on a cleanup schedule.
5. Your rights
- Access and edit your account information under Profile.
- Withdraw consent (for example turn off location sharing or revoke location permission in system settings).
- Delete your account and related data in the app or through the Delete account page.
- Send complaints or personal-data requests to the contact email at the bottom of the page.
6. Children
The app is not intended for people under 16. If we learn of a child’s account we will delete it on request.
7. Changes to this policy
If this policy changes materially we will notify you in the app and update the date at the top of this page.