ideacheck
Would Hacker News fund it or roast it?
Brutal, honest feedback backed by 28,000+ real Hacker News discussions
Tap to speak
Riya in Bengaluru checked a AI tutor idea.
Would Hacker News fund it or roast it?
Brutal, honest feedback backed by 28,000+ real Hacker News discussions
Tap to speak
Riya in Bengaluru checked a AI tutor idea.
Knowledge Base
Answers to the questions every founder Googles at 2am.
How do I validate a startup idea?
Step-by-step framework
Read answer →What is TAM, SAM, and SOM?
Market sizing explained
Read answer →How do I get my first customers?
Proven early-traction tactics
Read answer →Why do most startups fail?
Top reasons & how to avoid them
Read answer →What is product-market fit?
How to know when you have it
Read answer →How do I write a pitch deck?
The 10 slides investors expect
Read answer →Free Tools
Quick tools to size your market, project runway, and check unit economics — no signup needed.
Market Size
TAM / SAM / SOM
How big is your market really? Estimate all three tiers in 30 seconds.
Try calculator →Startup Runway
Cash & Burn
Know exactly how many months you have before you need to raise or break even.
Try calculator →CAC vs LTV
Unit Economics
Are your unit economics healthy? Find out if your business model actually works.
Try calculator →ROI Calculator
Returns & Profit
Is your investment paying off? See your return on investment and payback period instantly.
Try calculator →Break-Even Point
Fixed vs Variable Costs
How many sales before you start profiting? Find out in seconds.
Try calculator →Startup Cost Estimator
Budget & Funding Needs
Estimate your first-year costs and minimum funding needed to launch and operate.
Try calculator →Real Evaluations
We broke down all 13 Y Combinator Fall 2026 “Request for Startups” ideas through an IdeaCheck lens. Here are three founder angles.
The Primer
by Andrew Miklas
The strongest wedge is not another homework helper. It is a product that earns parent trust, shows measurable learning progress, and becomes part of a child's daily routine.
Read breakdown →A Cloud for Small Software
by Pete Koomen
This is a strong founder-market fit idea if the product owns the whole lifecycle: prompt, build, host, update, and retire small software.
Read breakdown →Self-Maintaining APIs
by Harsha Gaddipati
This is a natural IdeaCheck fit: painful, technical, frequent, and tied to measurable developer time lost when integrations break.
Read breakdown →Got Questions?
Everything founders ask before validating their first idea.