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.
Kiddle - Google for Kids
LanguageBeast.com - Study English synonyms and antonyms to enrich your vocabulary
Kids App Hunt - Let's talk about the best apps for kids
Skeebdo - Learn English words from any movie/TV show
KidsWifi - Simply plug in to protect your kids online