Word Game - Practice vocabulary like a champ.
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.
Wordly - Keep track of the words and time you spend writing
Mondly - Learn 33 languages in 500 bite-size lessons and 14 conversational modules.
BurningVocabulary - Touch and highlight YouTube & Netflix subtitles
Lingvo TV - Learn languages while watching movies on Netflix.