Support
One person builds these, and the same person answers the mail: support@techgravity.net. You will get a reply from the developer, not a ticket queue.
Before you write
Include the product name, what you expected, what happened instead, and — if it's a bug — your device or browser version. A screenshot is worth a thousand words here too.
Bugs
Reproducible bugs get priority. If something eats your progress or your draft, say so plainly in the subject line and it goes to the top of the pile.
Feature requests
Welcome, with one honest caveat: these products stay deliberately small. The best requests make a tool sharper at what it already does.
Privacy questions
Short answers live in each product's privacy policy. Anything they don't cover, ask by mail.
Contact
Email: support@techgravity.net — usually answered within a few days, from Dublin.