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.
Pocket - When you find something you want to view later, put it in Pocket.
Wordd - Quickly look up vocabulary, abbreviations, acronyms, slang
Instapaper - Instapaper is a simple tool to save web pages for reading later.
Word of The Hour - Easily expand your vocabulary with a new word, every hour 🕖
ArticleWise - Turn any article into a flash card, in seconds 💡📝