Looking for the best fitness apps for your tablet or smartphone? These apps are so much fun you won't even realise you're working up a sweat.

fitness apps that are heaps of fun - IMAGE - Women's Health & Fitness

Nexercise

Price: Free (with in-app purchases)

Available for Apple (iPad, iPhone) and Android (tablets and smartphones)

Bored of endlessly pounding treadmill? Nexercise is a fitness tracker that lets you compete with friends and co-workers to earn real rewards! Achieve your fitness goals and you could win gift cards, workout gear and equipment! What's not to love?