Want to read, speak, or write in a new language but aren't sure where to start? These are the best language learning apps we've tested, no matter your budget, goals, or prior experience.

In the Google Translate app, users can set their language skill level, and it will create custom speaking and listening exercises for them.

Duolingo, a quick-and-easy learning app that boasts more than 128 million monthly active users worldwide — mostly for its language offerings — has expanded into mathematics with elementary and middle school lessons aligned to the Common Core standards.