Since update to iOS 10 with iphone 6S alarm is on also at the weekend even if its disabled! Why? Needed to deinstall to cancel alarm!
Update on this:
Wrote mail and got response within a few hours and solved problem
1) delete the app
2) restart your device
3) re-download the app from App Store
4) open the app and go to FreakyAlarm Settings > Reset > Reschedule Alarms
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