MCleaner for iPhone is a firewall software that can filter incoming calls and SMS messages according to pre-configured keywords and phone numbers. It has a profile feature that allows users to quickly set the working mode, as well as a scheduler mode. Users can also view blocked SMS and call records with details. The whitelist and blacklist can be imported from contacts, recents, and SMS or inputted manually. It is easy to use and perfect for busy people in important meetings or discussions.