Let me start by saying there are way too many 1 star reviews for this app! I have a mio alpha2 and think the app is satisfactory. Its not ground-breaking or life-changing, but it does its job for the most part. I occasionally have connection issues where the app cant find the watch, but quitting the app and reopening it a time or two always fixes the problem. I like that in the app you can select which activity you were doing, and that more types of activities have been recently added. Im interested to try the new Mio PAI app, too. Overall, Ill take a good enough app if it means Im getting the most accurate optical hear rate monitor and the ability to review read outs during and after exercise.
AntelopeOhYeah about Mio GO, v2.6.4