Call Master Key (Android) app for $2.99
This is the Pro Key for Call Master - it does nothing on its own. The Key is not visible in the app drawer, but can be removed through the application management interface. The key removes all nag screens and persistent notifications from the main application.
Call Master is a professional grade call and text message firewall, targeted at users who want the power of root in blocking or routing calls and text messages. It is one of only two applications able to completely ignore calls. The application has a vast suite of features not available in any other Android software. Read the contextual help and explore the UI by creating your own lists and profiles to familiarize yourself with these features.+