would not buy it if there had been a 30 day demo.
Use this app on Sunday for intervals while running a 1/2 marathon. After about 20 minutes, it sounded like the timer had started a second time, I kept hearing a second tone about 10 seconds after the first. After about an hour, it stopped completely.
When it does run properly, the display does not shut off, nor can it be shut off via any settings, draining the battery.
Overall, the more I use it, the more I think I wasted $2.
DEBS_PLACE about
UltraTimer, v5.3