opchat vs Elm

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

Elm is a fast, distraction-free workspace for your notes, docs, and ideas. Write and organize everything in one place — nested pages, a real block editor, and search that actually finds what you're looking for. No bloat, no fifty menus, no forced AI. NOTES & DOCS Write with a clean block editor built for speed. • Headings, checklists, code blocks, images, and multi-column layouts • Slash commands to add anything without touching a mouse • Nest pages as deep as you need — build your own personal wiki STAY ORGANIZED • Star and pin your most-used pages • Recent pages, always one tap away • Fast, full-text search across your entire workspace SHARE WHEN YOU WANT TO • Share any page with a link — view or edit access • Collaborate without giving up your whole workspace YOUR DATA, YOUR CALL • Export everything, any time — Markdown or HTML • Delete your account and all your data whenever you want FREE TO START Unlimited pages and blocks on the free plan — no credit card required. An optional paid plan with more storage is available on our website. LIGHT OR DARK Looks right at home either way. Simple, fast, and yours.