AltosUI
Live Rocket Flight Tracking
AltosUI is the iPhone and iPad ground-station app for flying Altus Metrum flight computers. Pair the TeleBT v4 receiver over Bluetooth LE, watch your flight live, walk up to the rocket with on-screen guidance, and read a post-flight report on the device before you’ve packed up the car.
Everything you need for a launch-day workflow is in the app: voice guidance, offline maps, flight replay, and a report generator that reads .telem files directly from the Files app.
Built for launch day
Watch the flight
Live ascent telemetry over Bluetooth LE — state, height, speed, tilt during boost, and range and bearing to the rocket. Voice narration calls out state transitions and peak values, and the Pad tab confirms arming, igniter continuity, GPS lock, and batteries before launch.
Walk up to the rocket
The Recover tab’s original List mode keeps showing bearing, distance, and the rocket’s coordinates — and now two new modes join it. The Recovery Map (experimental) is a walking map that rotates to your heading. The AR Recovery HUD (experimental) overlays a world-locked targeting reticle on the camera view. Both show a GPS uncertainty circle so you know the real search radius.
Read the report
Open the Flight Report (experimental) on the device — no laptop, no cable. Performance, phase timeline, motor, aero, GPS drift, and signal quality, with paginated PDF export. Replay any .telem file through the same live UI.
Hardware support
AltosUI pairs over Bluetooth LE with the TeleBT v4 receiver and tracks the full Altus Metrum flight-computer lineup, including the newest TeleMega v7:
- TeleMega v1–v7 — full 3-axis IMU, six pyro channels, GPS, separate pyro battery
- TeleMetrum v1–v4 — single-axis high-G accelerometer, barometer, GPS, two pyro channels
- TeleMini v2–v3 — barometer and two pyro channels (no GPS, no IMU)
- TeleGPS v1–v4 — GPS tracker with a simplified flight state machine
What you see depends on what each board sends. Non-radio boards in the Altus Metrum family — EasyMega, EasyTimer, EasyMotor — log to onboard flash and are read out over USB on AltosUI desktop, not iOS.
Where AltosUI iOS fits
AltosUI iOS is the field app, scoped to launch day and recovery. AltosUI desktop (Mac, Windows, Linux, from Altus Metrum) is the workbench for firmware flashing, altimeter configuration, and full .eeprom analysis from recovered flight computers. AltosDroid is the equivalent Android app. Use them together: launch day on iOS, deeper analysis on the desktop when you're back home.
The iOS app does not configure altimeters, flash firmware, or read .eeprom files — those workflows belong on AltosUI desktop.
Coming next: v3.1 voice refinements are in TestFlight now — smarter GPS-based callouts, cleaner phrasing near zero, and uninterrupted narration across calls, Siri, and Bluetooth route changes. See release notes →