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by ortusdux 1947 days ago
None of the apps I've seen use AR. As far as I know, they are 100% gyro & compass based. These tend to need to be calibrated. G-maps has a built in calibration tool, I believe there is a calibration option in the android dev tools, and there are several apps that claim to calibrate as well.

I've been meaning to dive into ARCore, and on my list was a constellation based compass & gyro calibration app.