This program is designed to show you how much time you have spent playing maps from each of your collections. It calculates playtime for each map as well as total playtime in a collection.
Download the latest version from releases page (Windows only), unpack in and launch the executable. In case you are missing any dlls you should install .NET Framework. Upon launching, the program will attempt to find osu directory automatically. If it fails, you will be presented with a prompt asking you to select the directory manually. Please select osu your installation directory, e.g. D:\Program Files\osu!
The program uses this formula to calculate playtime for a map:
Map playtime = Map drain time * Number of plays in local ranking
This means that only finished plays count towards playtime. Any unfinished or failed plays won't added to the playtime. The formula also does not include break time.