I have a app idea. Please tell me your best ideas

I intend to create a taxi system through niotron. I want to know that when someone opens this app, they want to show drivers who are within a certain range from where they are. For example, let’s say within a square kilometer. When these drivers register in this app, their permanent location will be added to the app. Then when a person logs into the app as before, the information of these drivers is shown. Have any idea how you can do that?

try using location tracker extension from deep host for the location