LatentChat vs BastionChat

Try different generative language models with LatentChat, a fully offline, on-device private AI chatbot. LatentChat is ready to use right out of the box. Ask questions, brainstorm, reason, transcribe speech, add your own models and create with your customized chat companion from anywhere, even without an internet connection. - Local chat Try models like Llama, Gemma, Qwen and Mistral or use your own local LLMs by selecting your preferred open-source language models stored on your device. Reasoning models are supported, too. - Remote chat LatentChat can be used as a client to connect to any OpenAI-compatible and Anthropic-compatible API endpoint, whether it is running on your own private servers like Ollama, LM Studio or on cloud services OpenRouter (Bring your own API Key). - Retrieval-Augmented Generation (RAG) Create your knowledge center from text or files (PDF, TXT, JSON, HTML) and retrieve your documents while you chat to ask related questions or summarize. A RAG system can also help the model reduce hallucinations by referencing the knowledge you added. - Vision capabilities Try multimodal models like Qwen 3 VL, InternVL and LFM2.5 with vision capabilities, to analyze images or extract text. - Transcription and Voice (STT and TTS) Transcribe recordings or audio files with Whisper and read messages aloud with different voice styles. Multiple languages are supported. - System Prompts Use System Prompts to personalize your conversations by providing custom instructions that can modify the behavior or personality of the AI. Features: == Completely offline and on-device processing == Your prompts remain private and are never shared == Model catalog: a selection of LLMs downloadable from HuggingFace == Bring your AI models: download and choose your favorite LLMs (.gguf) == Connect to servers like Ollama or LM Studio for more powerful models == Local RAG: Integrate your own knowledge from text == Vision capabilities with multimodal models to process images == Text to speech: read messages aloud (English, Spanish, French, Portuguese) == Multilingual transcription (STT) using Whisper == Customize system instructions and parameters == Shortcuts integration == No subscriptions, buy once and get any update Read the terms and privacy policy before using this app, available on latentlake.com/termspolicy/chat-policy-terms

Private AI that runs entirely on your iPhone, iPad and Mac. Chat with your documents, get instant summaries and ask out loud, with no internet, no account and no data collected. ASK YOUR DOCUMENTS Import a contract, a manual, a report or a scanned PDF. Ask in your own words and get a clear answer, with the source one tap away, so you can check it instead of trusting it. Small documents are read in full; large libraries are searched. INSTANT SUMMARIES Turn a long file into the key points: parties, dates, amounts, conditions. JUST ASK OUT LOUD Voice mode with on-device speech recognition. Nothing is uploaded. UNDERSTANDS IMAGES Ask about photos and screenshots with vision models. WORKS OFFLINE On a plane, at sea, underground: the AI model lives on your device, so it keeps working. In airplane mode, web tools are simply not offered. PRIVATE BY DESIGN No account. No tracking. Your documents and conversations never leave the device. Apple's privacy label: Data Not Collected. Lock the app with Face ID using iOS's built-in app protection. YOUR CHOICE OF MODEL A curated catalog of open models (Qwen, Gemma, Phi, LFM and more) sized for your device: fast ones on iPhone, larger ones on iPad and Mac. Or import any GGUF model from Hugging Face. FOR POWER USERS Adjustable thinking (Off, Short, Full), calculator, optional web search, MCP tools for agent workflows. ONE PURCHASE No subscription, no usage limits, Family Sharing. Download a model once, then everything runs locally. Requires iOS 18 or later. Larger models need more memory; the app recommends what fits your device.