I previously rated mobizen 4 & 5 stars, BUT NOW my rating is 1 STAR! WHY? Because Mobizen deleted internal sound feature when using clean recording mode which was one of their BEST FEATURES!! They want to sell us their internal sound add on from Amazon! Check the market mobizen... Other screen recorders have internal sound recorded with screen record! Im down loading the screen recorder that has internal sound built in to the app from your competitor NOW! Return screen record w internal sound