Support

The fastest way to reach us is email: filyaevilya21@gmail.com
We usually respond within two business days.

Common questions

Nothing happens on the iOS Simulator.

Apple's iOS Simulator does not provide a barometric sensor. AltLog needs a physical iPhone (any iPhone 6 or later includes the pressure chip).

iOS asked for Motion & Fitness — why?

The barometer sits behind the Motion & Fitness permission. Granting it lets AltLog read relative altitude. AltLog still does not count steps and does not read heart rate or any health data.

My ascent says zero even though I climbed stairs.

Two common causes:

The session wasn't started. Tap Start before the climb, not after.
Direction threshold is too high. Open Settings → AltLog and lower the "Direction threshold" slider. The default 0.40 m is tuned to suppress sub-metre noise; some buildings have unusually shallow stairs.

Where is my history stored?

On your device, in SwiftData. Nothing is sent anywhere. Deleting the app removes everything.

How accurate is barometric altitude?

The chip is repeatable to about ±10 cm in calm conditions. Weather fronts cause slow drift over tens of minutes — AltLog's hysteresis filter cancels most of that, so a 5-minute trip up four flights of stairs reads correctly. Pressurised vehicles (airplanes, modern subway cars) report the cabin pressure, not the external altitude.

Found a bug?

Drop us an email with: iOS version, the kind of climb you were doing, and a short description of what you saw vs what you expected. Screenshots help.