Hi everyone,
I’m Tiri, an independent developer based in Germany. I reached out to the OSMF board asking where to present my project, and Héctor kindly pointed me here.
I’m building Xopoz, an Android GPS team tracking app for professional field teams - mountain guides, search & rescue volunteers, NGO field operations, adventure tour operators. The app is
built entirely on OpenStreetMap with zero Google dependency.
Why OSM matters to this project
OpenStreetMap is not just a fallback for Xopoz - it’s the foundation. The app uses OSMDroid for all map rendering and has zero Google Maps or Google Play Services dependency. This means it
runs on de-Googled phones (GrapheneOS, LineageOS, /e/OS, CalyxOS) with full functionality.
Users can also configure any raster tile server as their map source - corporate tile servers, satellite imagery, offline MBTiles caches, or their own self-hosted TileServer GL instances. OSM
is the default and the heart of the map experience.
What makes Xopoz different
- End-to-end encrypted GPS positions - Every coordinate is AES-128 encrypted on-device with team-specific keys before transmission. The server stores only encrypted blobs and cannot see real
locations (zero-knowledge architecture). - Device-focused teams - Each device is an independent tracking entity. You can track phones, vehicles, equipment - anything with GPS - as individual team members.
- Battery-efficient - Hardware motion sensor wake, adaptive GPS/network switching, up to 90% power reduction when stationary. Designed for all-day field use.
- Custom map servers - Any raster tile source with dynamic style switching and offline support.
- No Google anything - No Play Services, no Firebase, no Analytics. Direct Android GPS API.
- Made in Europe with European privacy values. No ads, no data selling.
Who it’s for
The primary audiences are professionals who already understand maps and coordination challenges:
- Mountain guides tracking clients across terrain
- Search & rescue volunteers coordinating in the field
- NGOs managing field staff with privacy requirements
- Tour operators monitoring group safety
Where things stand
The app is in pre-release. (Not yet on google play) The Android client and .NET backend API are functional. I’m looking for feedback from the OSM community and early testers willing to try it in real field
conditions.
Full documentation is not Yet online, but I will be happy to answer all your question as I own the full stack.
Short demo video (with technical detail):
I’m happy to answer any technical questions about the OSM integration, the architecture, or anything else. Feedback at any level - from “this is useful” to “have you considered X” - is
genuinely valuable at this stage.
Also having contact with Osm licensing crew to ensure App will be compliant would please me.
Also Google Play make mandatory 20 independant testers before app goes to the public space. And would be happy to have privileged contacts interested to play testers in exchange of the App in demo mode.
Thanks for reading,
Tiri
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you may find different shorts on youtube with the keyword “Xopoz”
