App replacement for: A personal trainer
Platform: iOS, Android, Windows Phone
Price: Free (subscription optional)
A personal trainer in your pocket, Endomondo is the closest you'll get to miniaturising Matt Roberts. Part fitness tracker, part fitness motivator, the Endomondo app can be tailored to just about any cardiovascular exercise you can think of - all it needs from you is permission to use your phone's GPS location, and some actual movement.
Having set your basic fitness level, the Endomondo app will give you nudges to ensure you meet your latest fitness goal - be that kayaking a little further or pedalling that bit harder than your last session. You can even input indoor fitness exercises (though it won't know if you're lying about that last press up). By connecting with the Endomondo website, you can then keep an eye on your fitness diary, set new targets and challenge friends to beat their personal bests.
Given you can connect Endomondo up to a growing number of fitness wearables to extend its use, and even more options available with the monthly premium subscription, this could spell the end of your relationship with your personal trainer (if you ever had one).