ChatStack in ChatGPT
Estimate your app development cost in ChatGPT. The plugin ChatStack - App Cost Estimator turns an idea into an indicative build cost, an MVP scope, user stories, requirements, and a technical specification — the same interview as chatstack.app.
Who it is for
Use it when you want to know what an app would cost to build, or have an app idea in mind to scope, without opening a coding tool. Founders, product people, and teams who already work in ChatGPT can start there. Builders who prefer Cursor, Claude, or another MCP client should use ChatStack MCP instead.
How to start
- Open ChatGPT Plugins.
- Search for ChatStack - App Cost Estimator and enable the plugin.
- Ask how much it would cost to build, or describe the app you want estimated.
- Go through the ChatStack interview with your ChatGPT assistant, responding to decisions as they come.
- When the estimate is ready, submit your contact details. ChatStack emails the pack and a portal link.
Try on ChatGPTWhat you get
- An indicative total development cost
- An MVP scope you can trim before you build
- User stories, requirements, and a technical specification
- An emailed pack and a portal link to refine that scope
The estimate is free to generate and usually takes about 10–30 minutes. A consultation to verify assumptions is optional.
Frequently asked questions
- What is the ChatStack ChatGPT plugin?
- It is the published ChatGPT plugin “ChatStack - App Cost Estimator”. Ask how much an app would cost to build or describe your app idea. ChatStack estimates the development cost and produces an MVP scope, user stories, requirements, and a technical specification.
- How do I start ChatStack in ChatGPT?
- Open ChatGPT Plugins, search for ChatStack - App Cost Estimator, enable it, and go through the ChatStack interview. The steps are in How to start above.
- Do I need a ChatStack account to use the ChatGPT plugin?
- No. The interview stays anonymous until you submit the PRD. Contact details are collected only at that step, and ChatStack emails a portal link so you can refine the pack.
- Is ChatStack just a wrapper for ChatGPT?
- No. ChatGPT is the host. ChatStack estimates what the app would cost to build and writes the MVP scope, stories, requirements, and tech spec behind that figure — the same workflow as the chat on chatstack.app.
Related
- ChatStack MCP — the same interview from Cursor, Claude, and other MCP clients.
- MCP setup guide — connect to the ChatStack App Cost Estimator MCP from a compatible AI assistant.
- What is ChatStack?