HELP & CONTACT
Let’s get you
back on track.
A few answers for the road ahead. If you need more help, we’re an email away.
Include your iPhone model, iOS version, app version and what happened. A screenshot can help; remove any information you don’t want to share.
COMMON QUESTIONS
Good to know.
How do I start or stop measurements?
Open Altimeter Now, allow location access when prompted and turn on Live Activity. To stop the sensors and end the Live Activity, turn the switch off. Turning it on again resumes the current session.
Why does the app need location and motion access?
Location provides GPS altitude, vertical accuracy and, when available, speed and course. Motion access allows the app to read your iPhone’s barometer. Location can continue in the background while a measurement session is running.
If access was denied, check Settings → Privacy & Security → Location Services and Motion & Fitness. Find Altimeter Now and allow the relevant access.
Why is the altitude different from another source?
Altitude is an estimate. GPS reception, vertical accuracy, pressure changes and sensor availability can affect readings. The app uses GPS readings that meet the accuracy threshold in its settings, with calibrated barometric altitude when available. Before barometer calibration, GPS may be the only available source.
A real device is required to check barometric measurements. Altimeter Now is not intended for safety-critical navigation.
Why does my Live Activity update slowly or disappear?
The app schedules measurement updates no more than once per minute; iOS controls when they appear. Live Activities can last up to eight hours. Force-quitting the app stops its updates, and the activity may remain visible until the system removes it.
Check that Live Activities are allowed for Altimeter Now in iOS Settings. Display on CarPlay or a paired Apple Watch depends on compatible hardware, system settings and a connected iPhone.
How do I save or delete a session?
Hold “Hold to start a new session” to archive the current session and begin another. Switching off the Live Activity pauses measurements without archiving the session.
Open Session history to see saved sessions. Swipe left on a completed session to reveal Delete. Settings and session history are stored locally; deleting the app removes its local data.
How can I reduce battery use?
Turn off the Live Activity, then choose Energy Saving in the app’s settings before starting again. This mode uses less frequent GPS updates in the background. Continuous background location in Precise mode uses more battery.