I just got this app yesterday and have used it for three watches. Since its only been one day it might be too soon to post a review. Nevertheless, here we go. The app looks great but is a little difficult to use. Its tough to drop the markers on the watch face without moving them a little, which of course impacts the accuracy of the app. Also Im not sure its accurate at all. I have one watch that I KNOW is fast, if anything, and the app shows it as being -30 secs/day after one day.
ntvtxngop about Twixt Time