opchat vs OpenChat Connect

opchat lets you chat with all major AI models in one place — using your own API keys or running models directly on your device. Your API keys stay on your device, encrypted with secure storage. Your conversations are sent directly to the AI provider you choose and never pass through our servers. We don't collect, store, or have access to your chats. No middleman, no subscriptions, no data harvesting. BRING YOUR OWN KEYS Connect OpenAI (GPT), Anthropic (Claude), Google (Gemini), DeepSeek, OpenRouter, Straico, Azure, Ollama, or any OpenAI-compatible endpoint. Switch between models mid-conversation or set a default per persona. ON-DEVICE MODELS Run AI models directly on your device — completely offline, no API key needed. Browse and download GGUF models from Hugging Face. Your data never leaves your phone. Perfect for privacy-sensitive use or when you're offline. CUSTOM PERSONAS Create AI assistants tailored to your needs. Set a system prompt, personality, speaking style, knowledge areas, and conversation starters. Build a research analyst, a coding mentor, a creative writing partner — whatever you need. BUILT-IN TOOLS • Web Search — real-time results via Serper or Tavily • Image Generation & Editing — create and refine images with AI • Voice — speech-to-text input and text-to-speech output • Memory — the AI remembers context across your conversations • MCP Servers — extend with custom tools via Model Context Protocol ORGANIZE YOUR WORK Group conversations into projects. Pin important chats. Search across all your history. Export conversations as Markdown or JSON. FULLY CUSTOMIZABLE Choose from multiple themes (Claude, GPT, Perplexity, Code) or create your own with custom colors. Pick from 23 fonts. Adjust message density, roundness, and font size. PRIVATE BY DESIGN Zero tracking. Zero analytics. Your API keys are encrypted on-device. Conversations go directly to your chosen AI provider — we never see them. Use on-device models or Ollama for fully offline, local AI with no data leaving your phone. AI-GENERATED CONTENT All responses are generated by third-party AI models and may be inaccurate or incomplete. Content safety is enforced by each provider's built-in policies. You can report any AI-generated response directly within the app. Terms of Use: https://opchat.app/terms Privacy Policy: https://opchat.app/privacy

OpenChat Connect is a free native iOS app with two ways to chat. Download a model and talk to it on your iPhone. Or bring your own API key and use OpenAI, Claude, Gemini, OpenRouter, or any custom endpoint. No OpenChat account. No lock-in. On this device Version 1.2.0 adds curated MLX downloads from Meta, Qwen, and Phi. Pick Fast, Balanced, or Strongest, then choose the On This Device provider. That chat runs on the iPhone. You do not need an API key for it. Your key, any model Paste a key and use OpenAI, Claude, Gemini, OpenRouter, or a custom OpenAI-compatible endpoint, including Ollama, LM Studio, or vLLM. The same key setup also covers Mistral, DeepSeek, cloud Qwen, Moonshot, Z.ai, and 01.AI. Pick the model that fits the task. Switch later. The app does not lock you to one provider. One app either way Chats, rules, memory, and skills are stored on the device. You can set global rules and per-chat rules, edit memory, and run a skill with / in the composer. Web search is optional and uses your own search key (Tavily, Exa, Brave, Serper, or SerpAPI). The app can render streaming Markdown and code, send a photo to a vision-capable model, and finish a cloud reply in the background with a local notification. Private by design OpenChat has no backend, no account, and no analytics. On-device model chats are not sent to a cloud model provider. When you choose a cloud model, that message goes from your iPhone straight to the provider you picked. OpenChat does not sit in the middle. API keys and search keys stay in the iOS Keychain. The app is free. Cloud usage is billed by the provider on your key, not by OpenChat. On-device chats do not use a provider key. App Store: https://apps.apple.com/us/app/openchat-connect/id6798106079 Source (MIT): https://github.com/robert-garay/openchat Support: robert@genion.ai