You don't need to specifically have an Android phone to use this tracker – it works with both Android 4.4 and iOS 9.0 and later. It can display notifications from any phone its synced with, but you can only reply if connected with an Android phone. The tracker can automatically detect when you begin an exercise so you don't have to manually tell the tracker when you are working out. The tracker also sends you notifications to stay motivated and help you meet your goals. You can use it to stream Spotify, and it can store up to 500 songs.