Sygmatic

Sygmatic teaches languages from real native-speaker YouTube clips — every word transcribed, every sound visualized as a waveform, every lesson followed by a quiz auto-generated from the speech's grammar and tense. Originally a paid SaaS that Kyle co-founded with Bradley Grochocinski; modernized in 2026 as a portfolio piece on Next.js 16, Drizzle, Auth.js v5, and SST 4.

Textbook audio is sanitized and unnatural. Learners want to understand how the language is actually spoken — at real speed, with real prosody — but raw native video has no scaffolding to learn from.

Sygmatic builds lessons on top of real native-speaker YouTube clips: every word is transcribed and click-to-seek, every clip is rendered as an interactive waveform, and each lesson ends in a quiz generated from the speech's own part-of-speech and tense metadata. The clever bit on performance is that waveform peaks are precomputed offline and committed to git, so Wavesurfer v7 renders instantly without re-analyzing audio in the browser. Originally a paid SaaS that Kyle co-founded with Bradley Grochocinski, it was modernized in 2026 on Next.js 16, Drizzle on Aurora Serverless v2, Auth.js v5, and SST 4.

• 76 published video lessons in Spanish, French, German and English
• Word-level transcript with click-to-seek and per-word definitions
• Waveform peaks precomputed offline and committed to git, so waveforms render instantly
• Quizzes auto-generated from each lesson's part-of-speech and tense metadata

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