Power meter data (3 sec avg) is practically all I ever look at on my Garmin 520 while riding, and sometimes heart rate. I also set the "High Power Alarm" in the Garmin, when I know it's a recovery day/week and I don't want to over-exert myself. I also like to have navigation running with the alerts on screen. And I want battery life to exceed 4-5 hours, without having to recharge. Convince me that there's an Android app that will do these things.