I was in Japan last year. iPhone version was super easy and worked flawlessly for me.

Agree! Just a heads up for folks that you’ll likely want to download the Welcome Suica app which is aimed at tourists.

The regular Suica app is separate and is not English-friendly (this may be worth it for you only if you’re staying long term, ok with the language barrier, and want a card that doesn’t expire).

Is it the Apple Wallet version or the actual Suica app? I'm wondering about the Apple Wallet one.

Apple Wallet version is enough for 99% case. You do need the suica app for things like purchasing green car ticket etc.