(A full review of the Suica App is here)
JR East has released their Suica app on the Japan App store. Here is a quick look using screen shots from the app store product description. I`ll post better versions later.
The opening screen shows your Apple Pay loaded Suica cards (up to eight cards can be loaded) with reload payment options via your designated Apple Pay credit card. There is also a green Ticket Purchase/Suica Management button at the bottom
The Ticket Purchase/Suica Management screen shows your current transit pass (if you have one). The purchase options below are: green car seating, Shinkansen express tickets, and transit pass purchase. Below that are Suica purchase history, change card info and name card options.
The next two screen shots: Suica Details shows the Suica ID#, card balance, and transit pass details (if applicable). Suica Purchase allows you to create a new Suica on your iPhone 7 or Apple Watch Series 2 device.
The last two screenshots: Suica Account details on the left. The last screen is the message you get on older iPhones that do not support FeliCa NFC: “This iPhone does not support Apple Pay. Please pair this iPhone with an Apple Watch to use Apple Pay