Frequently asked questions
Don't see your question? Email us at hello@startkeel.com.
What is Startkeel?
A viability tool for SaaS founders. Plug in your numbers and get a plain-English verdict — your runway, break-even month, and the one thing to fix — judged against real stage benchmarks. No spreadsheets, no finance degree.
Who is it for?
Solo and bootstrapped founders building a subscription SaaS at pre-seed/seed who want to know if their business is actually viable, and what to fix first.
Is it free?
The runway calculator, the Viability Score and 9 mini-calculators are free, with no signup. The full Viability Model is a one-time payment (€49 founding price, then €69) — not a subscription.
What do I get with the paid Viability Model?
A 36-month P&L, your cash-runway curve with zero-cash and break-even months, a benchmark diagnosis across 9 metrics (your value vs healthy range vs verdict), full unit economics, cap table & dilution if you raise, scenarios, prescriptive insights with target numbers, PDF/CSV export, and a calibrated AI prompt. All built from your own numbers.
Can I see an example before I buy?
Yes. The showroom shows complete example Viability Models — the score, the plain-English verdict and the numbers underneath — across five real-shaped profiles, so you see exactly what you get before building your own.
Browse example models →Why not just use ChatGPT or a spreadsheet?
ChatGPT (or any AI chatbot) confidently makes up numbers — it hallucinates, so you can’t trust a runway or LTV it invented. A spreadsheet does the math but not the judgment: it won’t tell you whether your churn is healthy for your stage, or what to fix first. Startkeel computes every number with a deterministic engine (never invented) and judges it against real stage benchmarks. That’s also why your paid model ships with an AI prompt that locks in your real numbers and tells the AI not to invent — so you get its interpretation, not its imagination.
See how we calculate →Is it a subscription?
No. One-time payment. Your model is yours — recalculate, edit and download it anytime. New tools or products are bought separately; you are never auto-charged.
Do I need finance knowledge?
No. Every field has a plain-English tooltip, and the output explains what your numbers mean for your business in plain English — not jargon.
How accurate is it?
It is an estimate of viability with deliberately declared simplifications (no taxes, cash ≈ recognized MRR, flat ARPA). The engine uses standard SaaS formulas, validated against real startups like Bannerbear and Papermark. It is informational, not financial advice.
Read the methodology →Is my data private?
We store only the inputs you submit to generate your model, so you can come back to it. Analytics are cookieless and anonymous, with no ad tracking. We are GDPR-compliant.
Read the privacy policy →What if it does not help me?
14-day money-back guarantee, no questions asked. Just email us and we refund you.
How do I access my model after paying?
You get a private link to your model, also emailed to you, so you can open it on any device. No account needed.
Does it work for non-SaaS businesses?
Today the engine is built for subscription SaaS only. If you run a marketplace, transactional or e-commerce business, we will tell you up front rather than give you numbers that do not apply.
What payment methods do you accept?
Card, plus Apple Pay and Google Pay, securely through Stripe.
Ready to see your numbers?