When normal calculators are close to a document, they quickly become distracting. And repeatedly
docking/undocking the calculator wastes time and breaks your concentration. We’ve come up with a better
solution. When our calculator is active, it’s a bright colour; when it’s inactive, it becomes 80% transparent
and barely noticeable. Even though it’s still handy right next to your document, it isn’t annoying. This feature
turned out to be much more useful than we expected.