Even though we started testing Tour under iOS 10 weeks before the release, it looks like the current version of Tour does not work as expected when running on iOS 10. This affects mainly two areas:

Tour is getting stopped by the system when it’s recording in the background. The app seems to be killed more often on iOS 10 than in older iOS Versions.
The iPhone sometimes does not recognise the iBeacon, even if it’s right next to it. The iBeacon periodically sends signals which are received and processed by the iPhone. Under iOS 10 it happens that the iPhone sometimes does not process those signals for multiple minutes, which causes the recording to stop.

We are working intensively on a fix for those issues and we will provide an update for Tour within the next days.