Learning a language isn’t easy and no app is going to make you fluent overnight, but if you want to be methodical about your studies and get a variety of learning style options, Rosetta Stone has a lifetime subscription on sale for $159.97 right now (reg. $299) with promo code VACATION15. Sale ends July 23.
Source: LifeHacker – This Lifetime Subscription to Rosetta Stone Is Over 30% Off Right Now