Semafor

We all tried to find someone in a crowded area, whether in a concert, festival, store, or street.
With Semafor you will be able to increase your visibility! This application allows you to flash the phone screen with the colors of your choice.
You just have to move your phone in the air to be spotted by your friends. You can quickly select the persons by whom you want to be found, Semafor will send them a pre-formatted SMS (and modifiable) to prevent them.

With Semafor, goodbye wasted time and hello finding effortlessly.