A free program for Android, by Integer LLC.

If you’re worried about your privacy and security when using your cell phone, you’re not alone. Fortunately, there are a number of tools and security applications available that can help. We’ve put together a list of the best security apps, including some that are available for free.

IMSI Catcher

IMSI Catchers are devices that allow you to monitor and track the calls you receive. Using an IMSI catcher is a cheap and easy way to track the phone calls you make. With an IMSI catcher, you can view and record incoming and outgoing phone calls.

You can view and record calls from any number that is displayed on your device.