This app can measure the distance by using iBeacon technology.
※If you don't have iBeacon transmitter, you can use an another iOS device as a iBeacon transmitter.
This app is for people that have a beef about "Measuring the distance by using GPS".
By all means, please try it.
You need to allow the activation of GPS and Bluetooth to use this app.
You need to use the device that is over iOS 7.0.