Word of the Day - Learn one new word, every day
Harken - Flashcard app using smart repetition to improve your memory
Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.
MemoStack - MemoStack is a flashcard software that help you memorize more things with less effort. It works great for test preparation, language learning, and more.
Wordd - Quickly look up vocabulary, abbreviations, acronyms, slang
Locked.app - Do you often forget if you've done something important?I keep coming back to check if I've locked the doors.You can check the toggle when you close the door or something.