Under iOS9 unusable

Since I updated to iOS9, the app crashes on startup, when bluetooth is turned on. Because I use a bt heart rate sensor it is right now useless for me.
Also exporting the saved tracks via e-mail doesnt work. The app says the e-mail was sent, but I dont receive the e-mail.
Therefor I cant recommend this app at all under iOS9.

Thilo T. about MotionX GPS, v23.0