I'm the developer. Box is a native GTK4 / libadwaita app for running language models entirely on your own machine — no account, no cloud, no telemetry. I originally built an Android version; this is a separate desktop app I wrote from scratch for Linux.

What it does:

• Local chat with Gemma 4 E2B/E4B (.litertlm models via Google's LiteRT-LM runtime) — streaming output, Markdown + LaTeX
• Voice — voice messages and hands-free voice conversation mode, with offline Piper TTS
• Live camera vision — point a webcam and ask about what it sees
• Document Q&A — index PDFs/docs into per-chat sources or reusable Notebooks; answers cite their sources
• Web search + filesystem tools, with an agent mode for multi-step tasks
• Persistent memory across chats
• Six themes (Catppuccin + Dracula)
• Everything is off by default — every capability is a separate opt-in switch, with permission prompts before any tool touches your machine

Install — grab the .deb from the Releases page, then run sudo apt install ./box_0.1.0_amd64.deb. Dependencies are pulled automatically. On first run it offers to download a model (~2.59 GB), then runs fully offline. CPU-only works fine.

Upfront notes:

• Built and tested for Ubuntu 26.04 (amd64) — it depends on Python 3.14 and GTK4/libadwaita from the system.
• It's closed-source — the .deb ships compiled code. (My Android version is open source; the Linux one isn't, by choice.)

GitHub + Releases: https://github.com/jegly/Box

Hey everyone!

I’m the maintainer of Box and wanted to share a project I’ve been pouring my energy into non-stop.

Box is an Android app that works completely offline — no cloud, no account, no tracking. Everything stays right on your device.

Here’s a taste of what it can do:

• Voice-to-voice conversation (real-time, hands-free)
• Live camera + voice (ask about what you’re pointing at)
• On-device image generation
• Document analysis (attach text files directly)
• Hardware acceleration via NPU/TPU/GPU
• Biometric lock & encrypted chat history

Check out screenshots and the full feature list on the GitHub repo: https://github.com/jegly/Box

I built Box because I wanted a private, fully offline AI assistant that actually works smoothly on a phone. If you value privacy and offline-first tools, you might really enjoy this, Huge thank you to everyone in the community for all the contributions so far ! we are at almost 5K users and growing daily !

Hi everyone,

I'm the developer of Box — just wanted to share a project I've been working on.

It's an Open-Source Android app that runs entirely offline. No cloud, no account, no tracking. Everything stays on your device.

Some of what Box can do:

Voice‑to‑voice conversation (real‑time, hands‑free — personal favorite)

Vision mode — live camera + voice (ask about what you're pointing at in real time)

On‑device image generation

Document analysis (attach text/PDF files, etc.)

NPU / TPU / GPU acceleration

Biometric lock + encrypted chat history

Real time live Translator in just about every language you can think of.

Loads of features — super useful and handy to have.

Actively maintained

The project also supports LineageOS and GrapheneOS with NPU/GPU acceleration, even if you don't have AICore installed.

Screenshots and full feature list: GitHub repo – https://github.com/jegly/Box

Thanks for taking a look!