Autonomous app builder demomed
Suryansh Tiwari demoed CatDoes v4, an AI system that he says builds full apps and websites autonomously on its own cloud instance, handling code, package management, bug fixes and deployment. The post presented the demo as an end‑to‑end developer automation workflow. (x.com)
An artificial intelligence coding agent that keeps working after you close the tab is the pitch behind CatDoes v4, the app builder Suryansh Tiwari demoed this month. (catdoes.com) CatDoes says its new “Compose” agent runs in the cloud, can use “its own computer,” and can install packages, run scripts, and test builds while a user is away. The company added those features in CatDoes v4.0.0 on March 26, 2026. (catdoes.com) The product’s workflow starts with a text prompt, then hands work across separate requirements, design, and software agents that generate screens, write code, and connect backend features. CatDoes says the apps are built on React Native Expo and can be previewed in a browser or on a phone with a Quick Response code. (catdoes.com, docs.catdoes.com) Deployment is part of the pitch. CatDoes says users can publish to a web address on its domain, build Android packages for Google Play, and submit iOS builds to Apple’s App Store through chat-driven steps inside the product. (docs.catdoes.com) The larger idea is “agentic” software development: instead of a chatbot suggesting code, the system is supposed to carry out the work itself on remote infrastructure. CatDoes pairs that with a managed backend it calls CatDoes Cloud, which includes database, authentication, storage, edge functions, and real-time events on all plans. (catdoes.com, catdoes.com) CatDoes had already positioned itself as a no-code mobile app builder in 2025, with Product Hunt listings on September 2, 2025 and November 25, 2025. The v4 release broadened that pitch by emphasizing background execution, parallel subagents, and web publishing alongside mobile release flows. (producthunt.com, catdoes.com) The company also added built-in monitoring before this release. In CatDoes v3.4.0 on December 28, 2025, it launched CatDoes Watch, which surfaces development and production errors and lets users ask the agents to fix them. (catdoes.com) That fuller loop — prompt, build, test, monitor, fix, deploy — is what Tiwari’s demo framed as a single workflow rather than a set of separate developer tools. CatDoes’ own documentation still says users stay involved on key decisions and must provide outside credentials for services like Expo and Apple Developer where required. (docs.catdoes.com, docs.catdoes.com) Early public feedback has been mixed. Product Hunt reviewers praised speed and background execution, while some also reported failed integrations, weak bug fixing, and costs rising when the agent struggled on basic issues. (producthunt.com) For now, the demo shows where this category is headed: from code suggestions toward remote agents that are supposed to ship working software on their own. CatDoes’ claim is that the missing pieces — backend setup, debugging, and release steps — now sit inside the same chat. (catdoes.com, catdoes.com)
