Maybe those apps haven't yet been updated to work properly with iOS 10.Something I have noticed is that the barometer sensor no longer works on my iPad air 2. I have tried several barometric apps and each says that the iPad does not have the sensor, which it did this morning.
Thanks. I did wonder this too, so I downloaded and tried several apps, one at least had been updated a few days ago, and all responded in a similar way.Maybe those apps haven't yet been updated to work properly with iOS 10