Hi Product Hunt! Solo developer here. I built PolyglotGym because I learn several languages at once and every app forced me to treat them as separate worlds. The idea behind PolyglotGym: every language you learn lives in one brain, so the app shows each language as a region of your brain and helps you keep them in sync. What makes it different: - Real CEFR courses (A1 to C2), not an endless drill treadmill. Lessons have grammar, dialogues with audio, and ~16 exercise types each. - 100+ languages, including ones the big apps ignore: Icelandic, Georgian, Belarusian, Mongolian, Tagalog, Luxembourgish... - The interface speaks 69 languages, and explanations are adapted to your native language (a Russian speaker learning German gets different grammar notes than an English speaker), because transfer errors depend on your L1. - Grammar reference, frequency word lists (Top 100/500/1000), a built-in dictionary, and a spaced-repetition vocabulary trainer. - Free to use - courses are not paywalled. Web, iOS, and Android. Tech, for the curious: Spring Boot + Next.js, course content served from an in-memory cache, TTS audio generated per language and dialect. I would love feedback, especially from people learning less-common languages - which language should I build out next?

PolyglotGym

A free gym for 100+ languages with real CEFR courses

A free gym for 100+ languages with real CEFR courses