There has been deluge of iPhone apps devoted to variety of brand names given their marketing potential. Latest in the series is Kello, which explores the potential power of iPhone. It keeps a useful check on the vital statistics of your valuable watch. All you need to do is to place your watch near your phone’s microphone. The phone listens to its mechanical heartbeat to make out the frequency and accuracy over period of time. The app also shows the daily rate gain or loss to within a tenth of a second, as well as showing you the beat error, all for just $8.99
Via: Hodinkee