One target at a time for 30 seconds — the score is how many you hit, with accuracy reported separately. Clicks on empty space count as misses and only move the accuracy figure.
Targets never reappear within a diameter of the last one — landing under a cursor that is already there would hand out free hits.
A mouse beats touch here. A lower score on a phone is the input method, not you.
It repeats the find-and-click motion, so it helps with target acquisition and click rhythm. It does not cover tracking or recoil control.
Yes — the grade only looks at hits in 30 seconds. Accuracy is reported separately, so read both numbers.
Not yet. It is fixed, and deliberately larger than the recommended minimum tap target so a finger works too.