Drag the button onto your bookmarks bar. Nothing downloads, there's no extension to approve, and there's no account to make.
to your bookmarks bar ↑
Phones don't have a bookmarks bar.
This one's a desktop trick — open this page on your computer.
Drop it onto your bookmarks bar, the same way you'd save any page.
Open whichever one you already trade on — or any other site.
That page becomes the tracker, and it keeps working underneath.
