The hardware is a Great execution (love the armband vs chest-strap and 3 buttons!) but proprietary. This device only works completely (Music Functions and HR Monitor) with myTREK software, which I dont like. THIS WILL NOT WORK AT ALL WITH RUNKEEPER. However the Scosche RHYTHM will work with "digifit" and "iRunner", but you will need to pay $2.99 for each app to enable sensors. RETURNING TO THE APPLE STORE AND TRYING THE WAHOO.
