Compatible applications
Where Is Tereza? accepts location updates from a wide range of phone apps and one satellite device. You can mix and match — multiple sources feeding the same map work fine.
Supported sources
| Source | Platform | Live | Offline buffer | Cost |
|---|---|---|---|---|
| OwnTracks | iOS, Android | yes | yes | free |
| Overland | iOS | yes | yes | free |
| GPSLogger | Android | yes | yes | free |
| OsmAnd | iOS, Android | yes | yes | free / paid |
| Traccar | iOS, Android | yes | yes | free |
| Garmin® inReach® | satellite | yes | n/a (satellite) | device + plan |
All phone apps publish over HTTPS to a per-organization URL that you generate in the admin under GPS sources.
Choosing a source
- Easiest setup: OwnTracks. Five minutes, both platforms, very battery-friendly.
- iOS power users: Overland. Tighter background scheduling, more configuration knobs.
- Android power users: GPSLogger. Best for high-frequency sampling (running, cycling races).
- Already on OsmAnd: tracking is just a plugin — no separate app.
- Going off-grid: Garmin® inReach®. Satellite-based, works where no cell service exists.
Per-source setup guides
Not supported
- Apple AirTag, Samsung SmartTag, Tile: these are passive Bluetooth trackers — they don't have GPS chips of their own and rely on a proprietary mesh of other phones to be located. They cannot publish to a third-party URL.
- Old eTrex / Garmin® Edge cycling computers without phone sync: these record GPX locally; they don't push live updates.
- Strava / Komoot live tracking: vendor-locked. Once a ride finishes, you can export GPX and import — but live tracking through these services is not exposed to third parties.
If you want to upload a finished GPX / FIT / KML file as a static trip, that flow is on the roadmap.
Garmin®, inReach® and Edge® are registered trademarks of Garmin Ltd. or its subsidiaries. This page is not affiliated with or endorsed by Garmin.
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