The Windows Phone app which has gone free next as myppfree app of the day is ColouRing. This is a fun new puzzle game that requires your colour senses! Select the best colours to form the best colour gradient as fast as possible!
Start from the inner circle and work your way through the rings to the outermost ring, selecting one section of each ring. When you tap a section, the other sections of that ring will be grayed out. Tap within that ring again to deselect the section and reveal the other options.
Try and complete all 10 rounds as fast as you can!
Download it today, it is FREE!!!