Smartphones are amazing machines. They're also horribly distracting. Forest is a new app that, somewhat contradictorily, helps you stay focused on the world around you. When you need to get your attention off your phone and onto your surroundings, open the app and plant a tree. The tree will grow over a set period, and if you try to leave the app while it's growing, the tree dies. Over time, you're able to cultivate an entire forest, and the app also gives you detailed stats, giving you greater insight into just how much time you are (or aren't) spending on your pocketable slab of glass and metal.