Simple, low-price model
We are playing for volume, not extracting a weekly fee from a basic result. Core calculations and public knowledge remain available without a subscription.
Free
Supported by carefully placed ads after results and inside reference content once advertising is enabled.
Affordable upgrade
Or $19.99 annually — equivalent to about $1.67 per month.
The calculators and local-first free experience are the first release. Plus checkout buttons automatically switch to configured Stripe payment links when production billing credentials are supplied. Until then, they open the launch list email rather than pretending a purchase succeeded.
Before paid launch, checkout will state the renewal price and interval directly. Cancellation will not require contacting support. Annual and monthly plans will remain separate, and an introductory price will not conceal a higher renewal.