I prefer the MTH Wi-Fi because it is easy to setup & run trains. My favorite functions are the soft keys all have labels. These screenshots are a quick look……
Step 1: Drag the locomotive to the ACTIVE List.
Step 2: Use the Soft Keys to start the locomotive: (Extended Startup).
Step 3: Run the AMTRAK #42 - Set the speed.
Step 4: The window for the main controls.
Step 5: Follow the same procedures for the second locomotive. UP BIG BOY #4014
Step 6: The window for the main controls for the BIG BOY #4014
I am on an iPhone 11 Pro with iOS 13.1.3. if you need more information, I have four YouTube videos on this subject.