App testing with the PhoneGap Developer App — see your changes instantly without re-building!

With this software, you can develop your app on the desktop, then see the changes instantly on your mobile device. There’s no need to re-sign, re-compile, or reinstall your app to test your code. You’ll have access to the device APIs that aren’t available in web browsers. Let’s give it a spin!

For more info:
http://phonegap.com/blog/2014/04/23/phonegap-developer-app/ 

Using the Desktop Safari Web Inspector to Debug Your Installed iOS App

 

You can install your app on your iOS device and monitor its usage on your desktop monitor, including console feedback. Here’s how.