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Free tools

Validate startup ideas without writing code

Deterministic calculators and checklists used inside Kavon Startup Studio. Free, no signup, no AI calls — just clear rubrics that make your reasoning explicit and comparable across ideas.

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The validation loop

How these tools fit together

Each tool answers one question in the order a careful founder would ask them. Use them in sequence on the same idea and you will have a defensible go/no-go call by the end of the week.

  1. Step 01

    Score the idea

    Run the Idea Validation Score Calculator first. The weakest pillar tells you what to dig into next.

    Open →
  2. Step 02

    Plan the interviews

    Use the Customer Discovery Question Generator to prepare for five to ten conversations with real customers.

    Open →
  3. Step 03

    Audit MVP readiness

    After interviews, run the MVP Readiness Calculator to confirm you have what you need to start building.

    Open →
  4. Step 04

    Run the full loop

    When the gaps need real work — research, validation plan, landing page, prototype — request access to the studio.

    Open →

Why these tools exist

Make validation reasoning explicit

Most early-stage startup decisions die quietly in the messy week before anyone learns anything real about the customer. Founders mean to validate, but the loop stays vague: a few interviews, a few search-result tabs, a deck that nobody quite agrees with.

The Kavon tools turn that loop into a checklist of explicit questions and named scores. Every output is reproducible from the inputs alone — no LLM hallucination, no opaque magic. If two ideas score differently, the tools tell you exactly which inputs drove the gap.

Use them on every idea in your portfolio. The same rubric applied consistently is the cheapest competitive advantage in early-stage decision-making.

FAQ

Frequently asked questions

Are these tools really free?
Yes. Every tool on this page runs entirely in your browser, requires no account, and uses no AI calls. We built them as the public, deterministic version of what the full Kavon Startup Studio does in depth.
Do I need to sign up to use them?
No signup, no email, no cookies beyond what is strictly required. The only flow that asks for any details is the optional "Request access" form at the bottom of each page, which is for getting access to the full Kavon Startup Studio.
How accurate are the scores?
They are opinionated rubrics, not oracles. Each tool documents exactly how its score is computed so you can interpret it correctly. The point is to make your reasoning explicit and comparable across ideas, not to deliver a verdict from on high.
Can I share my results?
Yes. Every calculator encodes your inputs into the URL — copy the link from your address bar (or use the Copy result link button on calculator pages) and anyone you share it with sees the same result.
What happens after I run a tool?
Each tool gives you a recommendation that points to the next step — usually customer interviews, an experiment, or a landing test. If you want a workspace that runs the whole loop end to end, request access at the bottom of any tool page.
How do these compare to the full Kavon Startup Studio?
These public tools are 1/10 of what the studio does. The studio adds AI scoring on top of your inputs, generates a market-research evidence pack, drafts a validation plan with hypotheses, builds the landing page or interactive prototype, and tracks experiments to a decision memo. The free tools are the surface; the studio is the depth.

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Run the validation loop end to end

The free tools are the surface. The full Kavon Startup Studio runs every step — capture, score, research, validate, plan, launch — across your whole portfolio.

  • AI scoring layered on top of your inputs.
  • Auto-generated market research and decision memos.
  • Landing pages and prototypes shipped in minutes.