GPSDeck is a native location workspace for iPhone and iPad. The current build is in development; an App Store release is being prepared.
First location
Open Position → Enable location, then allow access in the system prompt. Wait for a fresh valid sample before using Record or Mark. Precise Location is optional, but approximate access limits what the measurements can tell you.
Position and accuracy come from Apple's fused location service. A valid coordinate can be zero, and valid altitude can be below sea level. A dash means unavailable data, not zero.
Record and review
Tap Record to begin. Pause stops background collection; Resume begins a new segment. To finish, tap the stop button and Finish and save.
Open the saved track in Library to view the map, profile and available 3D geometry. Pauses, missing height and other gaps are preserved rather than joined into an invented continuous measurement. System interruption or force-quitting may interrupt recording; saved samples can be recovered on relaunch, but unsampled positions cannot.
Save a place
Mark saves a snapshot of the current valid position without requiring an active recording. Open the waypoint to edit its name and notes or attach selected photos, then tap Save.
Map → Pick on map creates a manual two-dimensional point. Its height and accuracy are unknown. Compass guidance uses straight-line bearing and distance, not turn-by-turn routing.
Export and keep a copy
Open a saved track and choose Export. GPX and GeoJSON include linked waypoints; CSV includes track samples. None of these formats include photo attachments. Check files before sharing, as locations and timestamps can be sensitive.
Records are local to the device. Deleting a track leaves saved waypoints and photos in place. Exported files and device backups are separate copies. See the privacy policy for storage and deletion details.
Explore the tools
Coordinate tools convert geographic formats, ECEF, ENU and projected grids. Motion and pressure must be enabled separately, require supported hardware, and are live foreground readings rather than saved track channels.
Built-in receiver satellite lists, per-satellite signal strength, RTK, external receiver connections, Watch recording and device-to-device ranging are not available in this release.
For missing readings or recording issues, see Support.