APN-Switch is described as 'Small APN on/off widget - uses code from APNdroid (ApnDao) which'. There are three alternatives to APN-Switch for Android. The best alternative is APNdroid, which is both free and Open Source. Other great apps like APN-Switch are APN OnOff (Free) and APN on-off Widget (Free).
Toggle that prevents your phone from connecting to internet over 3G/EDGE/GPRS. This application modifies APN names and types by adding apndroid suffix to them (you can edit them anytime in your phones Settings).
“APN OnOff Widget is a beautifully designed and easy-to-use widget. It allows you quickly enable or disable your 3G/EDGE/GPRS with only ONE click and lets you know the current connection status in a straight view.” Simplicity for simple functionality.