Welcome once again to our Daily App Giveaway section of theappwhisperer.com. We value our readers so much we want to share our love of apps with you. That’s why we have created this new section as each day we will be giving away free apps. Today we have Mathris HD apps to giveaway, each worth $0.99/£0.69. Mathris is an addictive tetris-style math game. 
Numbered balls constantly drop into the screen and your aim is to prevent the screen from filling up by eliminating balls. Balls can be eliminated by touching those that add up to the target value; so, for example, if the target value is 10, you can get…