How to Find Nearby iOS Devices (GPS locations) using same app
ios, iphone, xcode
Solution
Danielbeard is correct - you would need to be continually storing/updating locations on a server somewhere. Your app does get some running time when it is in the background, but I'm not sure it would be enough to run the web traffic that you'd need.
Check out this post: Running app in background and send frequent http request
And check out the multitasking guide here: Multitasking Guidelines
You can also look at Push Notifications. Hopefully this helps.
Problem
I want to create an app that allows a user to find the nearby other users location using GPS coordinates who are Logged in to the same app .Also it can be track the location of the devices(Logged in to the same app) which are moving in a car . Can someone give me an overview of how I can accomplish this. is there any free API available to accomplish this task.