Two ways to keep the counter
Every calculator on this site is free, and it stays that way: no figure is ever behind a gate. Membership is for the people who keep a record.
The account you start on
Free
$0/ forever
- Every calculator, unlimited, no account needed
- Sign in with your email and password
- Read and delete anything already in your ledger
Nothing expires. Saving new figures is the paid part.
Hallmarked
One price, once a year
Assay Master
$39/ year
- Save any result to your ledger, with unlimited entries dated and weighed against the last
- Print or PDF any saved receipt, itemized
- Early access to new calculators
- No ads, anywhere on the site
- Pays for hosting, upkeep and next year's tax figures
Fine print
- The ledger gate is enforced in the database, not the browser. Clearing your browser changes nothing.
- Cancel any time on Stripe's billing page, and your ledger stays readable and exportable either way.
- Charged once a year in USD. Every calculator stays free on either tier.