Who makes ZumaTools
Where a person maintains a tool, its page names them and links here. Pages on tax, health and official document rules can also name who reviewed them and when.

Mustafa Berber
Owner, Novpix LLC
Owner of Novpix LLC, the independent software company that builds and maintains ZumaTools.
The publisher
ZumaTools is published by Novpix LLC, which is responsible for the tools and the explanations on every page. Publisher contact details are on the contact page, and the about page explains how the tools work and how the site is paid for.
How pages are made and checked
Tax pages link the source of their rates and state the date the figures apply to, and close with what the calculation leaves out. Tool pages show when their content last changed, and the changelog records what changed. Our content and corrections policy explains how to read sources and dates, how authorship and review are shown, and how to report a mistake.