Cumbersome: AI LLM API Client
Not in any tracked top chart right now.
Updated 25 Oct 2026 · rankings refresh through the day
DeveloperFolding Sky Co
CategoryProductivity
PriceFree
Released
Rating★ 4.9 (96)
Version1.76.2
Age rating17+
First seen by us
23 Oct 2026
23 Oct 2026Rating
4.9 ★
96 ratings
Measured
Cumbersome: AI LLM API Client on the App Store
App details
App ID
6753016821
Publisher
Folding Sky Co
On the store since
Oct 2025
1 year on the store
Minimum OS
iOS 18.0+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
17+
5 content notes below
Languages
2
EN ZH
Size
82 MB
Also listed in
Developer Tools
Content notesInfrequent/Mild Profanity or Crude HumorInfrequent/Mild Mature/Suggestive ThemesInfrequent/Mild Medical/Treatment InformationInfrequent/Mild Alcohol, Tobacco, or Drug Use or ReferencesInfrequent/Mild Horror/Fear Themes
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.9 ★
96 ratings
Measured
Ratings
96
Measured
About Cumbersome: AI LLM API Client
IMPORTANT: Requires your own provider API keys or an OpenAI-compatible endpoint.
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.
WHY I BUILT THIS
Consumer AI apps hide the controls I want and lock me into one provider.
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.
SUPPORTED PROVIDERS
- ChatGPT / OpenAI
- Claude / Anthropic
- Gemini / Google AI Studio
- OpenRouter multi-provider
- Vercel AI Gateway multi-provider
- Z.ai
- OpenAI-compatible custom endpoints, including Ollama, Azure, LM Studio, Groq, Together, and self-hosted backends
WHAT YOU GET
- A versatile API client. One app, every major provider and model.
- Total control. Pick your model, tune the parameters, switch providers mid-conversation.
- Compare models head to head. Stream multiple chats in parallel and let an AI judge pick the best.
- Bring your own tools. Local browser use, reasoning, web search, image generation.
- Rich, editable conversations. Markdown, LaTeX, code blocks, attachments, edit and export anything.
- Private by design. iCloud sync across devices. Nothing saved to our servers.
- Native and accessible on iPhone, iPad, and Mac.
MAJOR FEATURES ADDED IN 2026
Highlights only.
New in 1.74.0: Incognito chats. Search Project documents and conversations with Pro.
2026-09-21: Independent iPad chat windows.
2026-09-14: Read replies aloud as they arrive. Save and Restart after editing.
2026-08-29: Select multiple chats. Mac export/import of all chats.
2026-08-21: Background replies on iOS 26. Question Cards for clarification.
2026-08-18: Web Agent: a shared, interactive browser.
2026-08-06: Highlight passages and attach notes for your next reply.
2026-08-03: Local Python analysis, charts, Mermaid, Markdown export.
2026-07-31: Gemini video. Responses API for custom providers.
2026-07-28: Parallel browser and MCP tools.
2026-07-23: Mind/Meld combines three AI responses into one.
2026-07-18: Full Simplified Chinese support.
2026-07-12: Ghost/Write drafts your next turn.
2026-07-09: Remote MCP servers and tools.
2026-07-02: Chat themes and reading fonts (Serif, Rounded, Mono).
2026-06-28: Folder system message presets.
2026-06-24: Prompt caching, with usage across providers.
2026-06-17: Reusable system presets per conversation.
2026-06-16: Offload long system messages to iCloud Drive.
2026-06-15: Toggle custom API parameters.
2026-06-11: Compact chats to lower API costs.
2026-06-07: Run JavaScript and HTML.
2026-06-04: OpenRouter PDF parsing and search engine options.
2026-05-12: Quick Prompt shortcut and App Visibility on Mac.
2026-05-09: Folders to group and organize chats.
2026-05-03: Collapsible sidebar sections, synced across devices.
2026-04-22: Image generation with OpenAI and Gemini.
2026-04-18: Local browser search
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.
WHY I BUILT THIS
Consumer AI apps hide the controls I want and lock me into one provider.
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.
SUPPORTED PROVIDERS
- ChatGPT / OpenAI
- Claude / Anthropic
- Gemini / Google AI Studio
- OpenRouter multi-provider
- Vercel AI Gateway multi-provider
- Z.ai
- OpenAI-compatible custom endpoints, including Ollama, Azure, LM Studio, Groq, Together, and self-hosted backends
WHAT YOU GET
- A versatile API client. One app, every major provider and model.
- Total control. Pick your model, tune the parameters, switch providers mid-conversation.
- Compare models head to head. Stream multiple chats in parallel and let an AI judge pick the best.
- Bring your own tools. Local browser use, reasoning, web search, image generation.
- Rich, editable conversations. Markdown, LaTeX, code blocks, attachments, edit and export anything.
- Private by design. iCloud sync across devices. Nothing saved to our servers.
- Native and accessible on iPhone, iPad, and Mac.
MAJOR FEATURES ADDED IN 2026
Highlights only.
New in 1.74.0: Incognito chats. Search Project documents and conversations with Pro.
2026-09-21: Independent iPad chat windows.
2026-09-14: Read replies aloud as they arrive. Save and Restart after editing.
2026-08-29: Select multiple chats. Mac export/import of all chats.
2026-08-21: Background replies on iOS 26. Question Cards for clarification.
2026-08-18: Web Agent: a shared, interactive browser.
2026-08-06: Highlight passages and attach notes for your next reply.
2026-08-03: Local Python analysis, charts, Mermaid, Markdown export.
2026-07-31: Gemini video. Responses API for custom providers.
2026-07-28: Parallel browser and MCP tools.
2026-07-23: Mind/Meld combines three AI responses into one.
2026-07-18: Full Simplified Chinese support.
2026-07-12: Ghost/Write drafts your next turn.
2026-07-09: Remote MCP servers and tools.
2026-07-02: Chat themes and reading fonts (Serif, Rounded, Mono).
2026-06-28: Folder system message presets.
2026-06-24: Prompt caching, with usage across providers.
2026-06-17: Reusable system presets per conversation.
2026-06-16: Offload long system messages to iCloud Drive.
2026-06-15: Toggle custom API parameters.
2026-06-11: Compact chats to lower API costs.
2026-06-07: Run JavaScript and HTML.
2026-06-04: OpenRouter PDF parsing and search engine options.
2026-05-12: Quick Prompt shortcut and App Visibility on Mac.
2026-05-09: Folders to group and organize chats.
2026-05-03: Collapsible sidebar sections, synced across devices.
2026-04-22: Image generation with OpenAI and Gemini.
2026-04-18: Local browser search
Latest updates
1.76.2
feat(chat): make detected phone numbers callable
feat(mcp): add recoverable Tasks for long running tools
feat(providers): add opt-in Responses compatibility
fix(mcp): cancel pending tasks when Incognito closes
fix(mcp): let users remove unknown or expired tasks
fix(mcp): report server task cancellation outcomes in chat
fix(attachments): retain full images or report failed saves
fix(chat): pair saved tool results independently of row order
fix(mcp): restore Kagi search and older MCP server connections
fix(mcp): restore connections and tool calls through HTTP redirects
fix(mcp): restore tool updates after connection loss
fix(mcp): use neutral labels for elicitation responses
perf(search): reduce sidebar search latency and CPU use
docs(pcc): plan optional Apple cloud chat integration
