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.

GooseChase - The Original Scavenger Hunt App

LanguageBeast.com - Study English synonyms and antonyms to enrich your vocabulary

Actionbound - Take people on real-world treasure hunts and guided walks Actionbound is an app for playing digitally interactive scavenger hunts to lead the learner on a path of discovery. We call these multimedia based hunts 'Bounds'.

Busuu - Join the global language learning community, take language courses to practice reading, writing, listening and speaking and learn a new language. Learn English with busuu's .

Scavenger - An augmented reality scavenger hunt for cash prizes