Spoofing is a free Android app developed by Scott Rosenberg that lets you spoof your caller ID with any number you want. It's a powerful tool that can be used for various purposes, from pranking your friends to keeping your personal number private.

With Spoofing, you can easily change your caller ID to any number you want, including international numbers. The app has a simple and user-friendly interface that allows you to quickly and easily select the number you want to display on the recipient's phone. You can also choose to record your calls and save them for later.

Overall, Spoofing is a great app for anyone looking to keep their personal number private or just have some fun with their friends. However, it's important to note that there are legal restrictions on the use of caller ID spoofing, so use the app responsibly and always check the legal restrictions in your area before using it.