What app should I use to track my workouts?

If you will be pairing ANT+ sensors we recommend Wahoo Fitness, because it works great with VELO and it’s free. Other options are Mio GO, Strava (not free, and doesn’t display cadence while riding) or Cyclemeter (displays everything, but isn’t free). As of 10/3014, VELO does NOT pair ANT+ sensors with MapMyRide, iBiker, or Runtastic Road Bike, or any Android apps.

If you just want to monitor heart rate, VELO works with the same third-party apps that LINK does. (Strava, Wahoo, Runkeeper, Runtastic, Endomondo, etc.)