Contact

The fastest way to reach us is email: contact@cryptosums.com

Found an error?

Error reports jump the queue. Send the page URL, what you expected, and what you saw — a screenshot helps. Math, data and rule errors are corrected under the editorial policy, and we credit reporters who want credit.

Suggestions & requests

Want a coin added to a calculator, another country in the tax estimator, or a new tool entirely? Tell us — the roadmap is genuinely shaped by requests, and "programmatic" pages (coins, countries) are cheap for us to add when there's demand.

Partnerships & press

Same inbox. Note before writing: rankings and calculator outputs aren't for sale, sponsored posts aren't published, and affiliate relationships follow the independence rules in our editorial policy.