Build Wisp: on-device transcription studio (web + native, one codebase)
Private, offline speech-to-text that runs Whisper on the user's own device —
free, no account, no per-minute fees. Replaces Otter.ai / Rev.
- Pure, tested engine: chunking, overlap timestamp-stitching, exports
(SRT/VTT/TXT/MD/JSON), WAV codec, resampler, job queue, model catalog (142 tests).
- Platform-abstracted TranscriptionEngine: transformers.js on web (loaded from
CDN at runtime to dodge Metro's onnxruntime-web bundling limits), whisper.rn
on native. Shared pipeline orchestrates decode -> chunk -> transcribe -> stitch.
- Cross-platform StorageRepo (Dexie web / expo-sqlite native), Zod-validated.
- UI: library + search, import, live-progress transcription, synced click-to-seek
editor, multi-format export; model picker + privacy in settings.
- Web ships as a single-page PWA with COOP/COEP isolation for threaded WASM;
Docker (nginx) image + Traefik compose for wisp.briggen.dev.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
NilsBriggen
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