Only if they have access to a mac and xcode would it be easy. Trying to develop anything for iPhone, even a fairly simple website, can be a genuine nightmare without the proper tools for testing, let alone an actual app. I once spent over 2 days trying to solve a bug that I was able to resolve in like 5 minutes after finally admitting defeat and borrowing my brothers macbook.

Unfortunately as part of the settlement, the Yuzu team is prohibited from ever working on an emulator for any Nintendo console again. This is why Citra was shut down as well.

Opera is chromium based

Enchantments? Bless, Hold person, Compulsion, etc?

It’s honestly not that hard to make one yourself if it’s just for private use, with just a little google-fu you could have something barebones but usable within a day or two. That said, if you intend this to be publicly accessible, don’t bother unless you have tons of disposable income. Filehosting is expensive af.