I would like to know if anyone is interested in unlocking the .
Right now, according to the developers themselves, taken from the responses of the Play Store:
"Hi, PRIP.ME is designed to block Mexico, Brazil and Argentina mobile country code (MCC). If Android platform detects your location to be in one of those three countries based on SIM or other methods, then the PRIP app will block your service. In Mexico, you must purchase Prip from AT&T Mexico In Brazil, you must purchase Prip from Nextel Brazil."
I've been trying to remove the lock but was somewhat unsuccessful. I managed to patch the APK in a way that let's you login if you have the SIM removed. After login you can reinsert the SIM and the app will work normally. If you restart the phone or move back and forth quickly over WiFi/Cellular Data it will also kick you out. Only way to have the service back again is to uninstall app and reinstall (or completely clean data).
What I was able to gather thus far:
mod edit - content removed
This last change seems to do the trick for fooling checks after intial login but only if you do not reboot nor switch quickly between WiFi/Cellular Data (you get kicked off for several login attemps too quickly)
I'm attaching original APK as downloaded from Play Store with no modification whatsoever (MD5 9c0e502c0840a2291e53c840f97631d9).