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Parrot
Parrot is a San Francisco-based, Y Combinator (Fall 2025) language-learning app that works like TikTok for Spanish. Learners swipe through short, native-speaker videos with tappable subtitles and an AI tutor, absorbing the language through comprehensible input rather than flashcard drills. The company positions itself as the app that actually produces speakers, aiming to turn idle scrolling into real conversational fluency.
RemNote
RemNote is an all-in-one learning platform that fuses note-taking, PDF annotation, and spaced-repetition flashcards into a single app, so students never have to bounce between Notion, Anki, and Quizlet. Born at MIT in 2020, it lets learners write notes and turn them into flashcards instantly - or let its AI generate cards, quizzes, and summaries from PDFs, lectures, and videos. Backed by a $2.8M seed round and used by hundreds of thousands of learners (especially medical and pre-med students), RemNote aims to reinvent how people learn, think, and remember.
Babbel
Babbel is a Berlin-based language learning company that teaches 14 languages through short, expert-designed lessons built for real-life conversation. Founded in 2007 and operated under the legal name Lesson Nine GmbH, it pioneered the paid subscription model for language apps and has sold tens of millions of subscriptions worldwide. Its lessons - typically 10 to 15 minutes - are written by linguists rather than crowdsourced or generated, and the company has layered in speech recognition and AI speaking practice while keeping human-designed pedagogy at the center.