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Releases: jegly/Box

Box

24 Apr 06:31
@jegly jegly
v1.0.1
75a646d
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New Inference Engines

Local Diffusion (stable-diffusion.cpp)
On-device image generation powered by stable-diffusion.cpp. Runs Stable Diffusion 1.5 in GGUF format, fully offline. Configurable steps, CFG scale, seed, and image size presets. Import
your own GGUF diffusion models.

Voice (whisper.cpp)
On-device speech-to-text powered by whisper.cpp. Record audio or pick a WAV file, transcribe offline. Supports Whisper Tiny through Small in multiple languages. Audio never leaves the
device.

NPU / TPU Acceleration
All Qualcomm Hexagon NPU variants (Snapdragon 8 Gen 2 / 8 Gen 3 / 8 Elite / newer), Google Tensor TPU (Pixel 8–10), and MediaTek NPU bundled in a single APK. Select NPU in the model
accelerator dropdown — Box auto-detects the chip at runtime.

Security

  • Biometric App Lock — Optional lock via BiometricPrompt, re-prompts on every foreground
  • Encrypted Chat History — All conversations persisted to SQLCipher-encrypted Room database (AES-256 at rest)
  • Passphrase isolation — BiometricEncryptionManager + PassphraseHolder keep the DB key in memory only while authenticated
  • Hard Offline Mode — Toggle in Settings forces full airgap; all download attempts are blocked
  • Security Audit Log — On-device append-only log of security-relevant events
  • Prompt sanitisation — SecurityUtils.sanitizePrompt() strips control characters before inference and persistence
  • Tapjacking protection — filterTouchesWhenObscured on the chat scaffold

Chat

  • Conversations persist across sessions and resume where you left off
  • Chat History screen — browse, resume, or delete past conversations
  • Multimodal input in AI Chat with Gemma 4 E2B / E4B — attach documents, record audio, take photos
  • Improved message input and scroll behaviour

Agent Skills

New built-in skills:

  • Budget Tracker
  • Password Generator
  • Translator

Updated skills: Calculate Hash, QR Code

Removed: Kitchen Adventure, Text Spinner

Model Management

  • Import any GGUF file from local storage at runtime
  • Set display name and accelerator (CPU / GPU / NPU) at import time
  • Fixed: models appearing multiple times after screen rotation (deduplication guard in loadModelAllowlist)
  • Fixed: Voice and Local Diffusion showing 0 models after allowlist reload
  • Gradle 9.4.1 compatibility
  • stable-diffusion.cpp and whisper.cpp added as native submodules
  • llama.cpp updated
  • Plus a whole lot more !
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v1.0.0

17 Apr 15:04
@jegly jegly
v1.0.0
95d79b3
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v1.0.0

Box v1.0.0 — Initial Release

Box is a security-hardened Android app for running large language models fully on-device. Forked from Google AI Edge Gallery with significant privacy and usability improvements.

Features

  • On-device LLM inference via LiteRT and llama.cpp
  • GGUF model support — import any compatible GGUF model from local storage
  • Accelerator selection — choose CPU, GPU, or NPU per model
  • Encrypted chat history — all conversations stored with SQLCipher encryption
  • Biometric lock — optional fingerprint/face authentication to access the app
  • Offline mode — block all network requests, run entirely air-gapped
  • Chat persistence — conversations are saved and automatically resumed per model
  • Copy to clipboard — long-press any AI response to copy it

Privacy

  • No telemetry or data collection
  • All inference runs locally on-device
  • Chat history never leaves the device
  • FLAG_SECURE prevents screenshots and screen recording

Notes

  • Gemma models are subject to the Gemma Terms of Use
  • GGUF import requires models compatible with llama.cpp
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