Audio-first PWA for learning the bird sounds of West Marin, California. Twelve habitats, ~150 species, lightweight spaced-repetition. No accounts, no backend, no client-side tracking.
react typescript pwa offline-first birds spaced-repetition ear-training birdsong howler birding field-guide tailwindcss vite zustand west-marin point-reyes
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Updated
May 1, 2026 - TypeScript