Contact

Email hello@handywren.com. I usually reply within a few business days.

What to write about

• A result that looks wrong. Tell me the tool, the numbers you entered and the answer you expected. A share link from the tool carries all of that in one URL.
• A tool you would like to see, and what you would use it for.
• Privacy questions. The privacy policy explains what the site stores and what it doesn't.

The site has no server to receive a form, so email is the only way to reach me.