Cumbersome: AI LLM API Client

About this app

<p>IMPORTANT: Requires your own provider API keys or an OpenAI-compatible endpoint.</p>
<p>I built Cumbersome because consumer AI apps kept dumbing things down. Cumbersome is the manual transmission of AI apps: more complex, but with far greater control.</p>
<p>WHY I BUILT THIS</p>
<p>Consumer AI apps hide the controls I want and lock me into one provider.</p>
<p>I wanted direct API access, the freedom to pick and compare models, and to pay providers for what I use. This is the app I use every day, so I pay attention and try to get it right.</p>
<p>SUPPORTED PROVIDERS</p>
<p>- ChatGPT / OpenAI<br />
- Claude / Anthropic<br />
- Gemini / Google AI Studio<br />
- OpenRouter multi-provider<br />
- Vercel AI Gateway multi-provider<br />
- Z.ai<br />
- OpenAI-compatible custom endpoints, including Ollama, Azure, LM Studio, Groq, Together, and self-hosted backends</p>
<p>WHAT YOU GET</p>
<p>- A versatile API client. One app, every major provider and model.<br />
- Total control. Pick your model, tune the parameters, switch providers mid-conversation.<br />
- Compare models head to head. Stream multiple chats in parallel and let an AI judge pick the best.<br />
- Bring your own tools. Local browser use, reasoning, web search, image generation.<br />
- Rich, editable conversations. Markdown, LaTeX, code blocks, attachments, edit and export anything.<br />
- Private by design. iCloud sync across devices. Nothing saved to our servers.<br />
- Native and accessible on iPhone, iPad, and Mac.</p>
<p>MAJOR FEATURES ADDED IN 2026</p>
<p>Highlights only.</p>
<p>New in 1.74.0: Incognito chats. Search Project documents and conversations with Pro.</p>
<p>2026-09-21: Independent iPad chat windows.<br />
2026-09-14: Read replies aloud as they arrive. Save and Restart after editing.<br />
2026-08-29: Select multiple chats. Mac export/import of all chats.<br />
2026-08-21: Background replies on iOS 26. Question Cards for clarification.<br />
2026-08-18: Web Agent: a shared, interactive browser.<br />
2026-08-06: Highlight passages and attach notes for your next reply.<br />
2026-08-03: Local Python analysis, charts, Mermaid, Markdown export.<br />
2026-07-31: Gemini video. Responses API for custom providers.<br />
2026-07-28: Parallel browser and MCP tools.<br />
2026-07-23: Mind/Meld combines three AI responses into one.<br />
2026-07-18: Full Simplified Chinese support.<br />
2026-07-12: Ghost/Write drafts your next turn.<br />
2026-07-09: Remote MCP servers and tools.<br />
2026-07-02: Chat themes and reading fonts (Serif, Rounded, Mono).<br />
2026-06-28: Folder system message presets.<br />
2026-06-24: Prompt caching, with usage across providers.<br />
2026-06-17: Reusable system presets per conversation.<br />
2026-06-16: Offload long system messages to iCloud Drive.<br />
2026-06-15: Toggle custom API parameters.<br />
2026-06-11: Compact chats to lower API costs.<br />
2026-06-07: Run JavaScript and HTML.<br />
2026-06-04: OpenRouter PDF parsing and search engine options.<br />
2026-05-12: Quick Prompt shortcut and App Visibility on Mac.<br />
2026-05-09: Folders to group and organize chats.<br />
2026-05-03: Collapsible sidebar sections, synced across devices.<br />
2026-04-22: Image generation with OpenAI and Gemini.<br />
2026-04-18: Local browser search and browsing.<br />
2026-04-11: Headless browser mode.<br />
2026-04-03: Searchable model picker.<br />
2026-03-15: Extended thinking and reasoning across providers.<br />
2026-03-09: Auto-delete chats after a set number of days.<br />
2026-02-28: Custom OpenAI-compatible providers.<br />
2026-02-25: Only Search When Requested.<br />
2026-02-24: Image paste, attachment previews, PDF thumbnails.<br />
2026-02-21: Siri and Shortcuts.<br />
2026-02-20: Vercel AI Gateway and model filters.<br />
2026-02-06: Voice Control, Larger Text, higher contrast.<br />
2026-01-11: VoiceOver, Dynamic Type, keyboard navigation.<br />
2026-01-06: OpenRouter integration.</p>
<p>THE DEAL</p>
<p>Core features are free. An optional Cumbersome Pro subscription adds advanced Project tools and supports ongoing development. You pay providers directly for API usage.</p>
<p>I'm Peter, an indie developer in Reno, Nevada, out among the high desert tumbleweed. No VC money. No growth hacking. Just a tool I wanted to exist.</p>