It works fine w/ chronos, gmts, and offset seconds – Twixt Time Review

Not sure what the two reviewers above are talking about. I own a Panerai w offset seconds and the app works fine. I also tried it on my TAG chrono and it also worked. I'm still not convinced of the accuracy of the app however. Seems a little overpriced as well, but then again so are the watches this app is meant for.
Review by Rokchok on Twixt Time.