Contact

The fastest way to reach us is email: hello@truesums.com

Three things we especially want to hear about:

• A wrong number. Tell us the tool, your inputs, and the result you expected — we'll re-check it against its sources and publish the fix.
• A missing tool. If you searched for a calculator that doesn't exist, describe what it should do.
• Stale data. If a rate or limit we cite has changed, send the updated source.