In some countries this is often a menu + a ordering and payment app.
It's very popular to the point that servers actually ask you to use it vs asking them.
In America this wont happen because of the tipping culture, so we get the worst bit (reading a menu on your phone) without the useful bit (reliably entering your order and paying without the check/card/away/back/tip dance).
In some countries there might also be a menu on the table for easier browsing. It does away with the frustrating parts of the experience like needing your orders ready at the exact time the waiter asks for it and having to wait for a bill after you finish. So you can just focus on the company of the people you're with, the food and the atmosphere.
It's very popular to the point that servers actually ask you to use it vs asking them.
In America this wont happen because of the tipping culture, so we get the worst bit (reading a menu on your phone) without the useful bit (reliably entering your order and paying without the check/card/away/back/tip dance).