Bond - A simple app that reminds you to keep in touch with people
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.
Thankster - Automagically send hand written cards
Reji - Improve your vocabulary hassle-free 📚
pplQ - A daily nudge to keep in touch with someone important to you
Japanese Emoticons - The ultimate copy tool for Japanese emoticons