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My favorite simple compass app is https://github.com/Kr0oked/Compass which is also on f-droid.

Pretty snappy, almost matches the refresh rate and latency of the iphone's compass app.

TFA looks way more sluggish, but I guess it is an effect of the smoothing.

Thanks for the comparison! Yeah, MBCompass applies smoothing intentionally to reduce jitter on noisy sensors — especially on low-end devices. That can make it look a bit less snappy, but I'm working on making it more responsive without sacrificing stability. Appreciate the feedback!

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