AI tool comparison
CatDoes v4 vs Jan
Which one should you ship with? Here is the side-by-side panel verdict, pricing read, reviewer split, and community vote comparison.
Developer Tools
CatDoes v4
An AI agent with its own cloud computer builds your mobile apps
75%
Panel ship
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Community
Free
Entry
CatDoes v4 ships with Compose — an autonomous AI agent that runs on its own cloud computer to build mobile apps, websites, and internal tools from plain text descriptions. You describe what you want, Compose plans the work, writes code, runs tests, fixes its own errors, and deploys — even after you close the browser tab. Every project comes pre-wired with a full backend stack: database, authentication, storage, edge functions, and real-time events. The v4 release focuses on higher reliability and GitHub integration for developers who want to export and own their codebase. Free plans start at 25 credits; paid plans begin at $20/month with more projects and higher cloud limits. What distinguishes CatDoes from the crowded AI app builder space is the "own computer" framing. The agent doesn't just generate code for you to paste — it has an execution environment where it can actually run and debug the app, catching errors before you see them. Whether that closed-loop debugging holds up in practice for complex apps is the open question.
Developer Tools
Jan
Open-source ChatGPT alternative that runs locally
100%
Panel ship
—
Community
Free
Entry
Jan is an open-source desktop app for running AI models locally. Privacy-focused with no data leaving your machine. Supports popular models and extensions for custom workflows.
Reviewer scorecard
“The closed-loop debugging is the real differentiator. Most AI code generators dump code on you and walk away — Compose actually runs the result and iterates. At $20/month with code export and GitHub sync, it's a serious prototyping accelerator even for experienced devs who just want to skip the boilerplate.”
“Every AI app builder claims autonomous error-fixing, and in practice they all hit the same wall: anything beyond CRUD starts failing in unpredictable ways. CatDoes is also a relatively unknown indie — if they fold or pivot, you're left with a codebase that was built in their proprietary stack. Export and own is a good safety valve, but validate it before depending on it.”
“This fills a real gap in the ecosystem. Worth adopting early.”
“This is the trajectory: agents that don't just write code but execute, test, and observe it running. When the agent can monitor its own output in production and self-correct, we've crossed into genuinely autonomous software development. CatDoes is an early bet on that future at an indie scale.”
“As a designer who occasionally needs a working prototype but doesn't want to learn Swift or React Native, this is a gift. Being able to describe an app in natural language and get something testable on a real device within an hour is exactly the kind of tool that removes the 'I need a developer' blocker from creative projects.”
“The team ships fast and responds to feedback. Good sign.”
Weekly AI Tool Verdicts
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