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LumiRead v1.0.0 — Initial public release

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@LagrangeNSS LagrangeNSS released this 23 May 22:23
· 15 commits to main since this release
v1.0.0
56c29b9

LumiRead 光语伴读 is a fully offline, privacy-first picture-book reading companion for children, powered by on-device Gemma 4 E2B via LiteRT-LM. Every photo, every reply — nothing leaves the phone.

Built for the 2026 Gemma Developer Hackathon · Edge AI track.

What's in this release

  • app-release.apk — ~290 MB. The app itself. Does NOT bundle the Gemma 4 model weights (~2.59 GB); the app downloads them on first launch, or you can adb push them yourself (see the README).

APK verification

SHA-256: 75f4c435e34501b2b05229e866db90da72b869567916401d730e279104a4c81b
Size:    304,771,037 bytes

Verify before installing:

sha256sum app-release.apk
# Should match the SHA-256 above.

Requirements

  • Android 8.0 (API 26) minimum, Android 12+ recommended
  • 6 GB RAM minimum, 8 GB recommended
  • ≥ 4 GB free storage after install (for the Gemma 4 model)
  • GPU backend (Adreno / Mali / Xclipse with OpenCL) strongly recommended

See README for the full matrix.

First launch

On first launch the app guides you through downloading:

  • Gemma 4 E2B weights (gemma-4-E2B-it.litertlm, ~2.59 GB) — Wi-Fi recommended
  • MeloTTS bilingual zh+en model (~189 MB)

After that the app is fully usable in airplane mode — no network calls.

Evaluators / slow-network users: you can adb push the models directly to skip the in-app download. See README §5.3.

Privacy posture

  • No network at runtime (apart from the optional first-launch model download)
  • No telemetry, analytics, or crash-reporting backend
  • No accounts, no login
  • Camera frames stay on device — written to the app's private cache and cleared at session end
  • No microphone recording — LumiRead reads through the screen, never through the mic
  • Study history is local-only, kept in an on-device Room DB

License

Source code under Apache License 2.0 (see LICENSE and NOTICE).

Models, frameworks and SDKs used at runtime carry their own licenses — see THIRD_PARTY_NOTICES.md.

For paper picture books, and the little readers who love them.

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