CallPirates is a VOIP app available on Android that allows you to make calls and send text messages at low rates, saving up to 90% on your current phone bill. It offers regular VOIP calls using WiFi or 3G connection, as well as Local Access or CallBack service when your internet connection is weak. The app also allows you to send cheap text messages. CallPirates has an easy-to-use interface and great sound quality. You can use your Android phone's contacts to make calls and send messages. It is free to use and you can create a CallPirates username in the app if you don't have one already. However, it is important to note that using the app as a default dialer may interfere with dialing 911 emergency services.