Forest is the best productivity app that Ive used. The environmental awareness behind the idea is incredible, and I wish there were more apps like Forest that strive to make the world a better place as people use it. The interface is clean and user friendly, and there is a weekly competition that helps to incentivise me to use the app even more. I really love this app. It is one of the few non-free apps that I have, and I think it was worth every penny. I highly encourage everyone to get this app!
adler- about Forest: Focus for Productivity, v3.14.2