Evernote
Evernote is used for many things. The one main thing it is used for is remembering things. Pictures and notes can be taken on this app. Also you can take voice memos and to-do lists. It currently has four stars. It can keep your stuff very organized by using to-do lists or keeping notes. I feel this app can be very useful to students and adullts that work so they can keep track of all of their stuff and stay organized.