Momentum is a Windows Phone 8 app designed to illustrate the positive moments in your life. At first glance you'd think Momentum was a gaming title but it's listed under the "Lifestyle/Health" section of the Windows Phone Store.
The idea behind the app is that as you record positive experiences, fuel is added to a hot air balloon and a journey documenting your daily achievements begins. A diary of sorts that would make the Fifth Dimension proud.
Momentum isn't going to appeal to everyone but if you're looking for a unique way to accentuate the positives in your life, Momentum is worth checking out.