Editorial policy

Independence

Rankings and verdicts follow stated criteria and our own testing. Commissions are never a factor, and we include tools that pay us nothing when they're the better choice.

Sourcing

Every number is either from a dated, linked official source, a calculator output with visible formulas, or a cited external figure with a link and date. We don't publish invented statistics.

AI assistance

AI tools may help draft structure and wording. Every factual claim is checked against a source on the page or in our data. We never publish AI-generated test results, reviews or screenshots.

Updates

Prices are re-checked monthly. Pages show when they were last updated and when prices were last checked; material price changes are logged.

Conflicts of interest

Stack & Sum earns a commission from some links on this site, at no extra cost to you. We also sell our own templates, each marked as our own product. See our disclosure.

Corrections

We fix errors quickly and log them on our corrections page.