We've all tracked data in our lives at some point, sometimes without even knowing we're doing it.
We count calories, track our miles travelled and monitor our finances on an almost daily basis - but there's a wider world of self-tracking out there that can help you optimise your life and make the most of your everyday.
And all you need is your mobile phone.
Vouchercloud have brought together 50 of the best apps to track everything in your life, ranging from your health to your finances and everything else in between; some are scary, some are ridiculously cool, but all of them have a purpose.
Feel free to look through and pick out your favourites!