App can (1) switch language (EN/CH) (2) show extra menus in CH (3) show language based on IP?

[Lovinflame]

Hi, 

I'm looking for an App that can 

(1) switch language (EN/CH)

Bulid multi-language and can switch language easily with one click.

(2) show extra menus in CH

In English, I'd like to show "about us, sustainability, products, contact us",

in Chinese, I'd like to show "about us, sustainabiliy, products, contact us" + "leadership and investors".

(3) show language based on IP

Only show Chinese when user's in Taiwan.

Does anyone know this kind of app (or apps)?

Looking forward to any suggestions!