Fitness app
I have an iPad mini 4, updated to latest version and I cannot get the Fitness app. It does not even appear in the App Store.
iPad Pro (4th generation)
Question marked as
A 2015 iPad Mini 4 is too old and is forever stuck on some version of iPadOS 15, currently at iPadOS 15.7.5.
Your iPad model is nearly 8 years old. It is too old for some Apple created apps.
Apple Fitness app, usually, requires the latest iPadOS versions, as well as a fairly current Apple Watch running its latest watchOS version.
Unfortunately, this is Apple's way of making its Apple Fitness users upgrade their Apple devices to use the latest Apple created apps.
Sorry.