LingQ is a language learning platform built on the principle of comprehensible input. It provides a vast library of articles, podcasts, interviews, and books, often with accompanying audio. As users read and listen, they can instantly look up new words and save them as "LingQs" for later review with a built-in spaced repetition system. The app visually tracks vocabulary growth, allowing learners to choose content suited to their level. It's an excellent tool for intermediate to advanced learners looking to expand their vocabulary and improve comprehension through massive exposure to authentic material.

Lingvist is a vocabulary-building tool that uses AI and spaced repetition to teach you the most statistically relevant words in your target language. It presents words in the context of full sentences, helping with comprehension. The platform continually adapts to your performance to optimize learning speed. While it is highly effective for rapidly expanding vocabulary, it offers minimal grammar instruction and no conversational practice, making it best used as a supplement to a more comprehensive program, especially for intermediate learners.