Sweet Bigger buttons would help but otherwise very good.
Great app! Droid hero 1.5
Will not uninstall...
No way to turn off vibrations in Android 7.0.
Serviceable Could be much better with a few small tweaks. Buttons are much too small as well as too close together. Needs feedback, possibly a stopwatch like countdown so users know it's running. Rating: Serviceable. (Installed, but looking for something better).
Added time to results.
Results now rounded to two decimal places.
Added some color to interface.
Improved About dialog with link to more developer Apps.