What changes iOS 18 & co. will bring to my Apple setup

The author lists which Apple features announced for iOS 18 and its companion platforms would replace or change their current setup, and what purchases or cancellations follow. Gentler Streak is being sherlocked, so the author plans to cancel its subscription, and Training Peaks is partly sherlocked, with workout planning no longer needed. Day One may be replaced by Journal if iOS 18 adds a tagging system, which iOS 17 lacks. The iPhone 14 Pro Max and an iPad Pro 11" do not support Apple Intelligence, so the author plans to buy new devices, and the author would keep a MacBook setup because of iPhone mirroring. The author also expects to cancel 1Password and still needs AllTrails for a year because new Maps hiking routes are only available in the U.S. and Japan.