My endless fascination with productivity and apps to improve my productivity has led me to Forest. That is in its essence a rather simple app. You plant a tree, by not using your phone for a set amount of minutes, in which you do work. It feels like a Pomodoro but it helps with distractions as well.
I rather like the idea and started to experiment a bit. My biggest issue so far was that, when the app was running on my phone, I could still procrastinate on my computer. No longer as I have found that there is an extension for Chrome as well.