Open UI - Open WebUI Client

Open UI is a beautiful, native iOS client for Open WebUI. Connect to your self-hosted server and chat with any AI model you've configured — right from your iPhone. Built 100% in SwiftUI, Open UI delivers a fast, polished experience with features the browser can't match. STREAMING CHAT WITH RICH MARKDOWN Get real-time, word-by-word streaming responses. Messages render with full markdown — syntax-highlighted code blocks with copy buttons, tables, math equations, block quotes, headings, and more. Everything flows smoothly as it streams in with no layout jumps. LIVE CROSS-DEVICE STREAMING Start a generation on the website and watch it stream in real-time on the app, token by token. Regenerations, title updates, follow-ups, and completion events all sync instantly between devices. CHART RENDERING When the AI outputs chart data in code blocks (Chart.js, ECharts, Highcharts, Vega-Lite, or Plotly), it's automatically rendered as a beautiful native Swift Chart right in the conversation. Supports line, bar, area, scatter, bubble, pie, heatmap, and histogram charts. Includes a Chart/Source toggle to view the raw JSON data. HTML PREVIEWS HTML code blocks are now rendered as a live preview instead of raw code. Includes a Preview/Source toggle, fullscreen mode, copy button, share sheet, and dark mode support — all in a scrollable sandboxed webview. VOICE CALLS WITH AI Have a real voice conversation with AI. Open UI uses CallKit for native iOS call integration, with animated visualizations that react to voice, real-time transcription, and familiar call controls. It feels like a real phone call. KNOWLEDGE BASES (RAG) Type # in the chat to browse and attach knowledge collections, folders, and files from your server. Your AI responds using the context you provide — just like the web UI. WEB SEARCH & CITATIONS Toggle web search per message. Your AI searches the web and responds with numbered source citations, favicons, and tappable links. TOOLS Enable server-side tools per conversation. Tool calls render inline with expandable arguments, results, and status indicators. REASONING / THINKING DISPLAY See the full chain-of-thought from models like DeepSeek and QwQ. Collapsible "Thought for X seconds" blocks let you explore the reasoning process. TEXT-TO-SPEECH Choose from four TTS engines: • Marvis Neural Voice — on-device AI voice powered by MLX • Server TTS — your Open WebUI server's endpoint • System TTS — Apple's built-in voices • Auto mode — picks the best available engine SPEECH-TO-TEXT Two STT options: • Apple Speech — fast, private, works offline • Server STT — server-side transcription FOLDERS & ORGANIZATION Organize conversations into folders with drag-and-drop. Pin important chats, bulk delete, and search across everything. Collapsible time-grouped sections keep things tidy. THEMING Light, Dark, and System modes. Pick an accent color from presets or a full color wheel. Enable pure black OLED mode and tinted surfaces. A live preview card shows y