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Cumbersome: AI LLM API Client

Cumbersome: AI LLM API Client

API to ChatGPT, OpenAI, Ollama

60 ratings
26 reviews
📊 Productivity
🛠️ Developer Tools
Free

Details

  • Released
  • Updated
  • October 1, 2025
  • August 23, 2026

Features

Developer

Folding Sky Co
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Cumbersome: AI LLM API Client screenshot #1 for iPhone
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Cumbersome: AI LLM API Client screenshot #7 for iPhone
Cumbersome: AI LLM API Client screenshot #8 for iPhone
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About

Connect directly to AI provider APIs for greater control over model selection and parameters. Compare different AI models, pay per use, and customize responses with advanced features. Supports multiple providers and custom endpoints.

✓Direct API connections
✓Multi-provider support
✓Full parameter control
✓Face/Off Mode with AI judge
✓Concurrent chats
✓Edit messages
✓Rich content support
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+2

What's New in Cumbersome

1.68.1

August 23, 2026

fix(network): allow longer-running responses fix(background): silence foreground response completion fix(camera): keep capture controls visible in landscape fix(ios-chat): restore first-message header interactions fix(face-off): present candidate details in a sheet fix(search): prevent automatic drawer focus refactor(settings): simplify tool controls

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User reviews

Most RecentHighest RatedLowest Rated

Exactly what I wanted

Great job Peter. I’ve only been using the app for a couple of days, but it’s exactly what I wanted and was very easy to set up.
Dj_230Dj_230

Not coding plan

Not z.ai coding plan
jan-dawajan-dawa

The Perfect Blend

This LLM client’s approach is the perfect blend of simplicity and complexity. For example, it’s simple and has a straightforward conversation history but an individual chat can easily be exported in full JSON for another agent to use if you need to take a conversation to the next level. Or how it uses iCloud for seamless sync. Peter rocks!
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OrganizeItOrganizeIt

My favourite AI app in iOS

Let’s you use Ollama Cloud and Open Router so you can switch between models at will.

Web search supported well with both and the app has been improving really fast since I started using it.
KaylhenKaylhen

No macOS 15 local search support?

Everything is great except for no macOS 15 local search support. Is this a technical limitation?
Douglas F. WilliamsDouglas F. Williams
See 21 more reviews

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FAQ

Does Cumbersome require API keys?

Yes, Cumbersome requires you to bring your own API keys from providers like OpenAI, Anthropic, Google AI Studio, or use an OpenAI-compatible endpoint. You pay the providers directly for API access.

How does Cumbersome compare to subscription AI apps?

Cumbersome offers direct API access, allowing you to choose specific models and pay per use, unlike subscription apps that may route requests to cheaper models and hide technical controls.

What AI providers does Cumbersome support?

Cumbersome supports ChatGPT/OpenAI, Claude/Anthropic, Gemini/Google AI Studio, OpenRouter, Vercel AI Gateway, Z.ai, and OpenAI-compatible custom endpoints like Ollama and Azure.

Can I compare different AI models with Cumbersome?

Yes, Cumbersome allows you to switch providers or AI models mid-conversation and compare different models on the same prompt, giving you direct insight into their performance.

What are the advanced features in Cumbersome?

Features include Face/Off Mode (AI judge picks the best of three responses), extended thinking for model reasoning, full parameter control (temperature, tokens), concurrent chats, and message editing.

Is Cumbersome available on multiple devices?

Yes, Cumbersome is natively available on iPhone, iPad, and Mac, with iCloud sync across devices. Nothing is saved to their servers.

How often is Cumbersome updated?

The latest version is 1.39.0, last updated on March 19, 2026. This indicates a relatively active development cycle for the application.

What is the age rating for Cumbersome?

Cumbersome has an age rating of 17+, suggesting it is intended for mature users due to the nature of AI interactions and potential content.