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.

Rosetta Stone is known for its signature immersion methodology, which teaches language entirely without translation by relying on picture and word association. This approach encourages learners to develop intuition and "think" in the target language from day one. The program is a highly structured, comprehensive course with a polished interface and a proprietary speech-recognition engine ("TruAccent") for pronunciation feedback. However, the complete lack of explicit grammar explanations and reliance on repetitive matching exercises can be slow and frustrating for learners trying to grasp complex or abstract concepts, making its method effective for some but not all.