I've used this app for 7+ years. Always happy with it until recently, when like other reviewers, I've experienced it regularly crashes and is not saving my runs. It still tracks and gives splits while you work out, but then something is going wrong with the data actually archiving. Very frustrating and disappointing. Uninstall and re-install does not fix the problem, neither does shutting down app manually. I'm an android user. Hopefully this bug can be fixed, or it's time to give up the app.