External devices
Pair your instrument.
SpeleoMap works with external devices on any iPhone that runs iOS 26. A survey instrument gives the distance and the tilt, your iPhone gives the direction, and every shot lands on your survey. Sensors, cameras and GPS receivers add cave air, photos and a sharper entrance fix.
Beta = built, waiting for its first tester log.
Have a device that isn't listed? Pair it anyway: SpeleoMap records what it sends, and Diagnostics sent from Settings, Support are how a new device gets added. How to use them: Guide, External Devices.