Offline AI Chat: Private

Private, offline AI chat on your phone — no internet needed once a model is downloaded.

Offline AI Chat is an on-device AI assistant and private AI chatbot for Android. Choose and download a local AI model, then use it for everyday questions, text generation, rewriting, summaries, translation, studying, brainstorming, math, coding, and focused work without relying on cloud AI inference. Your prompts and generated answers are processed on your phone by the AI you selected.

WHAT TO EXPECT

The AI runs entirely on your phone, so local AI is smaller than online chatbots. On entry-level phones answers can be slower and less accurate. The first download needs internet and free storage (from about 470 MB to several GB). Start with the small Tiny option, then try a larger one if your phone can handle it.

WRITE, LEARN, AND ORGANIZE

Turn a rough idea into an outline, polish an email, simplify a paragraph, compare options, create a study guide, explain a concept, or prepare notes for a project. Ask follow-up questions in the same private AI chat and keep useful conversations in a searchable local history. Use it as an offline writing assistant, then attach supported documents, photos, or audio when you need to give a compatible AI more context. Local AI differs in what it can understand, so availability and answer quality depend on what you install and the capabilities of your phone.

CHOOSE AN OFFLINE AI FOR YOUR DEVICE

Browse compact options for a quicker start or larger ones for more demanding tasks. The optional device check can recommend a suitable choice based on your phone; you can skip the recommendation and select another compatible one yourself. Downloads are substantial and additional free storage is required. After installation, preparation and AI inference run locally.

Available local AI models:

• Tiny v2 (Granite 4.0 350M) — ~468 MB

• Quick (Gemma 4 E2B) — ~2.6 GB

• Smart (Gemma 4 E4B) — ~3.7 GB

• Compact (Phi-4 Mini) — ~3.8 GB

Premium models: Gemma 4 12B, Qwen2-VL-2B, DeepSeek R1 1.5B, Qwen2.5 1.5B, Qwen2.5 Coder 3B, Qwen3 0.6B, FLUX.2.

CORE AND PREMIUM FEATURES

Saved chat history remains available without a subscription. Premium unlocks additional supported models and features, including questions about text-based PDF documents, custom system prompts, chat export, compatible local-model import, and private on-device image generation and editing where supported. Scanned or password-protected PDFs are not supported. Premium availability and feature support can vary by device and by the AI you choose.

WORK WITH CONTEXT

Use document chat for text-based PDF files, ask about an image with a vision-capable model, or discuss an audio attachment when your selected AI and device support it. Features depend on your hardware and the local AI you selected.

After the download, offline AI chat and inference work without an internet connection. Internet is still needed for app updates, model downloads, Google Play purchases or restores, and optional diagnostics when connected.

PRIVATE BY DESIGN

For private AI chat, conversation content is handled locally for inference rather than sent to a cloud AI service to generate an answer. This app does not promise current web information: local AI can make mistakes, so check important facts and professional advice.

Local AI technology, CPU, and GPU:

Backend: Google LiteRT / LiteRT-LM · Acceleration: CPU / GPU

Local LLM inference uses the Google LiteRT and LiteRT-LM backend. Auto uses CPU by default for stability. Compatible phones can use GPU acceleration when GPU is selected or when experimental GPU probing is enabled. Image analysis requires a compatible vision model and a working GPU runtime. Speed, memory use, battery impact, and feature support depend on the device and the AI used. Download sizes are approximate, and additional free storage is required.