A: GarageCube distributes the .app file directly. The .7z is a third-party compression choice by archivists. The raw .app is fine to drag to your Applications folder.
A: Likely. MadMapper 5.5 and 6.0 have moved to heavy reliance on Apple Neural Engine and Metal 3. Version 5.0.7 is the last "pure" Intel build before the architecture lockout.
When searching for specific archives like , it is vital to source your files from official or verified repositories.
If you have been using MadMapper 3 or 4, version 5.0.7 is a significant jump.