Guides
Plain-English explainers for the topics behind the calculators. Each one links to the tool that does the maths.
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How Much Should You Spend on Subscriptions?
There is no single right number, but there is a way to decide yours — and a few reasons the total is almost always higher than people guess.
August 28, 2026 -
SaaS Churn Benchmarks — What Counts as Good
Gross vs net revenue churn, logo churn, NRR and GRR explained in plain terms, with rough targets for a business selling to small and mid-sized companies.
August 28, 2026 -
What 99.9% Uptime Actually Means
How availability percentages translate into real downtime, why each extra nine costs so much more, and how to pick a target you actually need.
August 28, 2026 -
How to Set Your Freelance Rate Without Guessing
A step-by-step method for turning the income you want into an hourly rate that survives unpaid time, business costs and tax.
August 28, 2026 -
How to Estimate LLM API Costs Before You Build
A practical way to size the bill for a feature built on a language model API — what drives the cost, what estimates miss, and the levers that actually move it.
August 28, 2026