Lingvist

Unlike language apps built around conversation games or streaks, Lingvist is optimized for vocabulary acquisition speed: its algorithm continuously learns from how each user responds and adjusts the interval at which each word is reviewed to hit the 'tip of the tongue' moment just before forgetting.

The result is faster vocabulary retention compared to fixed-interval flashcard systems.

The app supports 16 languages including English, Spanish, German, French, Swedish, Dutch, Italian, Brazilian Portuguese, Norwegian, Danish, Estonian, Latin American Spanish, Polish, Japanese, Korean, and Russian.

Users can study from any of these languages as their base language, making it useful for multilingual learners who aren't starting from English.

Lingvist also allows users to build custom word lists importing vocabulary related to specific topics, texts, or professional domains and the platform automatically enriches those words with example sentences and audio pronunciations.

Grammar modules are integrated contextually alongside vocabulary, presenting relevant grammatical concepts when a word's usage requires it rather than as separate grammar lessons.

Lingvist is priced at $11.99 per month or $179.99 as a one-time lifetime purchase, with a 14-day free trial. The lifetime option is a significant value differentiator against subscription-only competitors. The app is available on iOS, Android, and web.