Guides for SaaS builders

What does "default alive" mean for a startup?

What "default alive" and "default dead" mean, how to calculate which one you are, and why it is the most important question for an early-stage founder.

Startkeel vs a spreadsheet: which should you use for your SaaS model?

An honest comparison of building your SaaS financial model in a spreadsheet versus using Startkeel — control and flexibility vs speed, benchmarks and a viability verdict.

How much runway should a pre-seed SaaS have?

How many months of runway a pre-seed SaaS should target, why under 12 months is risky, and how to extend runway before you raise.

When is a runway calculator the wrong tool?

An honest look at the limits of a runway calculator — variable costs, no revenue, no unit economics — and what to use instead for decisions that matter.

Startkeel vs ChatGPT: should you model your SaaS in an LLM?

Can you build your SaaS financial model with ChatGPT? Where it helps, where it fails (hallucinated numbers, no benchmarks), and when a deterministic tool is worth it.

Startkeel vs Causal & Runway for early-stage SaaS

Causal and Runway are powerful FP&A tools — but priced and built for funded teams. How they compare to Startkeel for a bootstrapped, pre-seed SaaS founder.

How much does a SaaS financial model cost?

What a startup financial model actually costs in 2026 — from free spreadsheet templates to fractional CFOs — and how to choose for your stage.

Will my startup run out of money?

A plain-English way to figure out if (and when) your startup runs out of money — no finance background needed. Plus a free calculator to get your number in seconds.

Can I afford to quit my job for my startup?

How to know if your side project is ready to go full-time — in plain terms. The two numbers that actually decide it, and a free tool to check yours.

How do I know if my business will survive?

A plain-English checklist to tell if your startup will make it: the few numbers that decide survival, what is healthy, and a free score that checks them for you.

Is my SaaS actually making money?

Revenue is not profit. A plain-English way to tell if your SaaS really makes money once you subtract the real costs — and a free tool to see your true picture.

How much money do I need to start a SaaS?

How much cash (or savings) you really need to start a SaaS, in plain terms: the simple formula, why 12-18 months is the usual target, and a free tool to size yours.

Am I charging too little for my SaaS?

Most SaaS founders underprice. The plain-English signs you charge too little, the two numbers that prove it, and a free tool to check before you raise your price.