OpenLanguage vs Clef

OpenLanguage pairs a capable AI tutor with voice I/O so you can practice speaking and listening the way you actually learn a language — by using it. The tutor adapts to your level, corrects you naturally mid-conversation, and never gets tired of your questions. Pre-made conversation topics for every level make jumping in a breeze. - Fully Open Source. - No accounts required. - Bring Your Own Keys: Plug in your own API key from OpenAI, Anthropic, or any compatible provider. You pick the model and pay only for what you use. Your conversations stay between you and whichever API provider you configure. - Voice I/O: Uses iOS's built in voice recognition and speech to text for free, on-device voice I/O.

Clef turns music theory into a game. Short lessons, sound in every exercise, and a leaderboard that makes you want to come back tomorrow. - REAL SHEET MUSIC READING Not just quizzes: learn to read real sheet music in treble and bass clef — rhythm, scales, harmony and more. Sixteen chapters, three years of curriculum. - HEAR WHAT YOU LEARN Every idea is played, not just read. A sharp raises a note by a half step — and you hear it. A third, a fifth, a scale you build note by note: your ear learns alongside your eyes. - TRAIN YOUR EAR Intervals, chords, cadences, perfect pitch — recognize music by ear, with a real audio engine and melodies recorded on real instruments. - SING IN TUNE Use your microphone to practice pitch-matching, with real-time feedback note by note. - PLAY AGAINST OTHERS A live weekly league, clubs, and your school ranked against other schools. Join yours with a code. - COME BACK EVERY DAY Three daily quests to collect, a daily goal, a streak to keep alive. Plus spaced review that brings old lessons back exactly when they start to fade. - PICK YOUR INSTRUMENT Piano, guitar, violin, trumpet, voice… Clef adapts sounds and exercises to your instrument. - English and French, letter names (C D E) or solfège (Do Re Mi) — whichever you prefer. Free to learn. No ads.