Contact Dzzz
We read every message. Here is how to reach us and what helps us answer quickly.
The fastest way to reach us is email. We usually reply within a few working days.
What to include
Say which tool you were using, what you expected, and what happened instead. If a calculator gave a figure you think is wrong, include the inputs — we check every report against the tool's published sources.
Please do not attach personal documents. We never need your files to fix a tool, and we would rather you kept them.
App support
If you use the Dzzz app on iPhone or Android, the app support page covers how the app handles your files and how to export its usage record.
Business and press
For partnership, advertising or press enquiries, use the same address and say so in the subject line.