1. Forest image via chrome.google.comA productivity app – you open it, you set a time, and plant a tree. If you check your phone before times up, you KILL the tree. Save the planet, do your work: what’s not to like? This is the best app ever - I legitimately could not have done my dissertation without this – it makes productivity into a game, and I would allow myself little breaks between tree planting and was able to study all day - Matt Kohler, BA English and History at University of York.