Built for startup founders
CLASH pressure-tests your idea before the market does, then stays with you as the venture grows, telling you what you have proven, what you are only assuming, and what to test next.
Free to start · No pitch deck needed · Built on the CLASH framework by Dr. Krisztina Edelmann
Score
A 1-to-5 read on each of the five CLASH dimensions.
Separate
What the evidence shows versus what is still assumed.
Remember
Your venture’s history, so every answer builds on the last.
Do not defend the startup idea. Continuously expose it to stronger reality.
How it works
Describe the problem, who has it, and any evidence you have seen. No pitch deck, no polish needed.
An idea has a founder. Your experience and perspective are part of the picture.
Review what will be assessed, edit it if needed, and confirm. Nothing runs until you say so.
See all five dimensions, what needs a closer look, and the next credible test.
The framework
Each dimension asks a plain question. Together they show where an idea is strong, where it is only assumed, and what is worth testing next.
Is the problem painful enough to make someone change their behaviour?
Is there evidence that people actually care?
Why you, and why is it difficult to copy?
What is the smallest version worth testing?
Does the market have enough energy?
Inside the Core
Journey records what happened. Ask CLASH reasons about what it means when you ask. The Compass shows where you stand and what to test next.
Log what happened in your own words. One source stays one event, and saving never changes your assessment.
Illustrative
Recorded by you
Spoke with two office managers about how they order team lunches.
Recorded by you
Published a sign-up page. No sign-ups yet.
Ask questions about your venture. Answers draw on what you have recorded, not on generic advice.
Illustrative
What should I test first?
Your strongest signal is the coordination problem. Buying urgency is still an assumption, and a pre-commitment test would tell you more than another survey.
See where your venture stands, why it matters, and what to do next. It stays quiet until there is real evidence to read.
Illustrative
Plan your milestones and see what is next. Completed steps fold away so the path stays focused on the test in front of you.
Illustrative
Enter the Core Already have an account? Sign in to your workspace.
One place for your venture
Ideas, conversations, decisions, milestones and assessments live together in the Core. CLASH always knows the whole story, so you never have to re-explain your startup.
Thoughts — Capture ideas, conversations and decisions in Journey.
Progress — See every assessment and how your scores move over time.
Goals — Plan milestones on your Trajectory and know what is next.
CLASH noticed · from your payments
Illustrative
14 first purchases this week, most from one channel.
What it may mean
An early demand signal for Loud Proof. The sample is still small, so it is worth growing traffic before changing the product.
ReviewNot relevant
Read-only, with your permission. CLASH tells you what changed and why it matters. It never updates your record without you.
How CLASH treats evidence
CLASH keeps what you believe apart from what you have demonstrated. It never changes your venture record, milestones or assessments on its own. You authorize every consequential change.
CLASH keeps these states distinct
Why CLASH exists
Working with executives, Dr. Krisztina Edelmann kept seeing the same gap: founders could build faster than ever, but still struggled to prove the market wanted their idea.
CLASH began in April 2025, on a flight to Geneva. The question that stayed with her: how do you know if your startup deserves to exist?
The goal isn’t to prove your idea is good. It’s to find out whether it’s worth fighting for.
FAQ
Problem intensity, evidence of demand, defensible advantage, the smallest meaningful MVP and market energy. It then connects the five signals into one diagnosis.
No. CLASH is a structured stress test, not a guarantee. It helps you decide what to validate with real customers before committing more time or money.
Your idea is stored securely in your account and protected by row-level access controls, so only you can access it.
No. Start free and explore your first diagnosis before deciding how to continue.
Share your idea, add founder context, and run your first 360° CLASH.
Start your first CLASHFree to start · No pitch deck needed
Your idea is ready
Start with your account details. Your saved idea and founder context belong in your private CLASH workspace.