Need to solve each use with iPhone 6 it continuously crush

It repeatedly crash using iPhone 6 these guys need to get their act together so that these app might be what it was with iPhone 5. it doesnt work fine it doesnt work at all it just crashes all the time sadly cause it was a good app they need to work this out, PRONTO!!

AgAwarrior about Joggy Coach - Running Jogging GPS Stopwatch, v1.9.7