CheckFa.st

Validate startup ideas with Google search data — get TAM, CAC, LTV, and sales estimates in 20 seconds.

checkfa.st

Verified

Quick facts
What is it	Validate startup ideas with Google search data — get TAM, CAC, LTV, and sales estimates in 20 seconds.
Pricing	Paid
Platform	Web Application
Best for	Validating market demand for new product ideas, Calculating financial viability before building a product
Domain registered	2024

Data updated Aug. 1, 2026

What does CheckFa.st do?

CheckFa.st is a validation tool that helps entrepreneurs test their startup ideas quickly. You describe your product concept, and it uses Google search data to analyze market demand and financial viability. Instead of spending weeks on market research, you get a comprehensive analysis in about 20 seconds.

The tool calculates essential business metrics including Total Addressable Market (TAM), Customer Acquisition Cost (CAC), Customer Lifetime Value (LTV), and sales estimates. It provides a complete profit and loss statement with editable formulas in an Excel file, plus ranked Google keywords with search volume and cost-per-click data. This gives you actual numbers to work with rather than generic market analysis.

CheckFa.st is particularly useful for startup founders and indie developers who want to validate ideas before investing time and resources. It helps answer critical questions: Are people searching for this type of product? What's the potential market size? What might the financials look like? The tool has been used by over 165 builders to make data-driven decisions about their products.

Non-AI Finance — Other

#business-metrics#cac-ltv#financial analysis#google-data#idea testing#market research#startup validation#tam-calculation

Key features

What makes it stand out

Calculates key financial metrics like TAM, CAC, and LTV using Google search data

Generates a full profit and loss statement with editable formulas

Provides ranked and filtered Google keywords with search volume and CPC

Delivers results as a downloadable Excel file for further analysis

Completes market and financial analysis in under 20 seconds

Who is CheckFa.st for?

Who benefits most from this tool

Validating market demand for new product ideas

Calculating financial viability before building a product

Conducting quick market research using search data

Trust & presence

Domain Domain registered 2024

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