Two years ago my mother always called a taxi by phone.
Now she uses an app to a car.
The app shows the price and the driver's name before the car .
This is useful, because she knows the price and she cannot pay too much.
Last month the app said four minutes, however the driver arrived after fifteen.
My mother called the and they gave her a .
My grandmother does not like the app, because she cannot read the small .
So we the car for her, and she pays the driver in .
An app is quick, however it is not always simple for old people.