If you're unfamiliar with GitHub, here’s a direct download link: OsuAreaCalculator.exe
AutoHotkey v1.1.x is required to hide and show your cursor. Download it here
This tool calculates your Osu! area by converting your monitor's current resolution into your tablet's active field in millimeters. Tracking and visualizes cursor movements on a graphics tablet, measuring the area you aim at, providing dimensions and positions. This was inspired in the oldschool "draw in a paper while see a replay" method, but i modernized it(i dont know how no one did that before LOL)
1- Put it in bordeless mode by disabling Fullscreen Mode
2- Put your tablet active area size in milimiters click on Set.
3- Open a replay. Press F5 and start aiming the notes pretending you are playing.
4- Press F6 to see the results, you can drag locations to see it respective areas.
Yes, the app icon is OTD icon with Osu! logo cuz im too lazy to do something original KEKW.