App to find each other in the last hundred meters?

Question

Mobile devices

How many times has the situation been, you need to meet a person, there is an address, such and such a street is house 5, you rush along this street, there is house 3 and house 7, you call up a brow: you see this yellow tree under a sign - no, but you that statue?
The British also like to give names instead of house numbers. The addresses look like this: Findmeifyoucan House, Verylong Street, London EC1Z 1XX
Is there an app that draws a map and shows the wanted person with a dot, and me to him.
EDIT: Permanent family tracking apps are different. Ideally, the app should send one point. Imagine that the courier brought you something, you do not want him to constantly know about your every step for years to come. But sms from url to google maps will help him a lot.

Answer 1

For iOS: https://itunes.apple.com/ru/app/najti-druzej/id466...

Answer 2

https://play.google.com/store/apps/details?id=com....

Answer 3

skype?

Answer 4

what3words.com