Break weak ideas.Build stronger ones.
Devil's Advocate stress-tests your idea, exposes weak assumptions, and shows better ways to make it stronger.
Built for founders, designers, marketers, consultants, and creators.
How it works
Core Idea
We extract what you're really trying to build
Weak Assumptions
We find the beliefs you haven't validated
Failure Points
We show where it breaks in the real world
Stronger Path
We propose better ways to position and build it
Deep Analysis Suite
Go beyond surface-level feedback
Pre-mortem Analysis
Simulate 5 failure scenarios before they happen. Get AI-generated prevention strategies.
Assumption Mapper
Extract hidden assumptions and plot them on a risk/confidence matrix. Validate before building.
Financial Stress Test
Run 4 scenarios: optimistic, realistic, pessimistic, survival. See your runway and break-even.
Customer Interviews
Chat with 5 AI personas: early adopter, skeptic, budget buyer, enterprise, tech-savvy.
Stakeholder Views
See your idea from 5 perspectives: investor, customer, competitor, regulator, employee.
Team Assessment
Analyze skill gaps, identify single points of failure, get hiring recommendations.
Available after your first review. See pricing
Why not just use ChatGPT?
ChatGPT is designed to be helpful and agreeable. It will validate your idea, add suggestions, and help you build it.
That's exactly the problem.
When you're validating an idea, you don't need encouragement. You need someone to find the holes before the market does.
Devil's Advocate is built to be an adversary. It's tuned to challenge, not to please. It won't say "great idea!" unless it survives the pressure test.
Real results
Before:
"Luxury coffee subscription for Gen Z"
After review:
Pivoted to office-focused B2B model
Avoided 6 months of wrong positioning
DTC Founder
Before:
"AI-powered design marketplace"
After review:
Discovered 3 funded competitors we missed
Repositioned before building the MVP
Product Lead
Before:
"Premium consulting service"
After review:
Found pricing assumption was 4x off market
Restructured offer before launch
Strategy Consultant
Try an example
Conversation
Structured critique + solutionsPaste an idea on the left and it will:
- identify the real core idea
- expose weak assumptions
- show what could fail in the real world
- propose stronger solution paths
Choose the right level of pressure.
Start free, validate the value, then unlock deeper reviews, stronger rewrites, and better execution advice.
Try Devil's Advocate
For serious founders
For teams validating together
For organizations at scale