ChatStack

ChatStack in ChatGPT

The ChatGPT plugin ChatStack - App Specs & Costs turns an incomplete app idea into user stories, requirements, a technical specification, and an indicative development cost estimate — the same interview as chatstack.app.

Who it is for

Use it when you want a development brief and a planning figure 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

  1. Open ChatGPT Plugins.
  2. Search for ChatStack - App Specs & Costs and enable the plugin.
  3. Describe your idea, or ask how much it would cost to build.
  4. Go through the ChatStack interview with your ChatGPT assistant, responding to decisions as they come.
  5. When the estimate is ready, submit your contact details. ChatStack emails the pack and a portal link.

Try on ChatGPT

What you get

  • Structured user stories
  • Requirements and a technical specification
  • An indicative total development cost — not a fixed quote
  • An emailed pack and a portal link to refine MVP scope

Generating the PRD is free 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 Specs & Costs”. In ChatGPT you describe an app idea; ChatStack interviews you, then produces user stories, requirements, a technical specification, and an indicative development cost estimate.
How do I start ChatStack in ChatGPT?
Open ChatGPT Plugins, search for ChatStack - App Specs & Costs, 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 runs a structured interview that writes stories, requirements, a tech spec, and an estimate — the same workflow as the chat on chatstack.app.

Related

ChatStack in ChatGPT | ChatStack