Evernote

In college, note taking is a necessity. Evernote is the king of note taking apps, with a feature set that combines bookmarking, composing, clipping and more. You could even use it for todo lists, if need to ditch all the todo list apps taking up space on your mobile device. If you really had to pick just one app for you study kit, it should be Evernote. It’s available on multiple platforms, usable in Web browser and mobile apps, comes with Web browser plugins/ addons, and it’s all free.