ChatGPT
Best overallChecked 1h agoLink OKFree plan available
Why it wins
Helps structure AI feature specs and experiment plans clearly.
When not to use
When you need to validate technical feasibility with engineers.
Free options first. Curated shortlists with why each tool wins and when not to use it. · 339 reads
Also includes a prompt pack (4 copy-paste prompts)
Helps structure AI feature specs and experiment plans clearly.
When you need to validate technical feasibility with engineers.
Free brainstorming on AI feature ideas and experiment designs.
When you need deep analysis of competitive AI features.
| Tool | Pricing | Verified | Link |
|---|---|---|---|
| ChatGPT | Free plan available | Checked 1h ago | Try → |
| Google Gemini App | Free plan available | Checked 1h ago | Try → |
Copy and paste these prompts into your chosen tool to get started.
Choose a product you know well. Describe what AI feature you would add and why. Be concrete about the problem it solves.
Write a feature spec with three sections: inputs (what the user provides), outputs (what the AI returns), and failure modes (when it might fail or give bad results).
Define two success metrics. One should measure user adoption. The other should measure quality or impact. Make both measurable in two weeks.
Outline a two-week experiment to test the feature. Include: who you will test with, what you will measure, and how you will decide if it is worth building.