Open app

Contact & support

Say something unsavory.

Tell me what's missing, or what's wrong, or that the maths disagrees with the label. Report a bug.

The other direction

Or say something nice

Not everything has to be a complaint. It's free while it's in coffee and built by one person, so if it's helped you out, a coffee covers the next late night. Send me a message.

Buy me a coffee

Payment is handled by Buy Me a Coffee — the panel is theirs, and your card details go to them, never to this site. If it doesn't open, the button goes to the support page instead.

What's this about?

The app does arithmetic. If a number looks wrong, compare it against the product label and the rate you typed, then tell me which one disagrees.

A reply might take a day or two. Your email is used only to reply to you: no list, marketing, or third party.