their page under questions and answers
Apple Creator Studio - Apple
says
"For the optimal experience, full functionality is available with macOS 26, iPadOS 26, and iOS 26 and later. Apple Creator Studio requires an Apple Account and internet connection to subscribe.
Final Cut Pro requires a Mac with macOS 15.6 or later or an iPad with Apple M1 chip or later, iPad (A16), or iPad mini (A17 Pro) and iPadOS 18.6 or later.
Logic Pro requires macOS 15.6 or later, iPadOS 26 or later, a Mac with Apple silicon, and an iPad with Apple A12 Bionic chip or later.
Pixelmator Pro requires a Mac with macOS 26 or later or an iPad with Apple M1 chip or later, iPad (A16), or iPad mini (A17 Pro) and iPadOS 26 or later.
Keynote, Pages, and Numbers require macOS 15.6 or later, iPadOS 18 or later, iOS 18 or later, or visionOS 2 or later. Some premium features require macOS 26, iPadOS 26, iOS 26, or visionOS 26 or later.
Motion requires macOS 15.6 or later.
Compressor requires macOS 15.6 or later. Some features require a Mac with Apple silicon.
MainStage requires macOS 15.6 or later."