Math Problems-Basic Questions
Viacheslav Khakhulin
Math Problems boosts your mental agility, speed, and focus. Solve challenging problems, track your progress, and sharpen your mind anytime, anywhere.
Source Url: http://appadvice.com/apps-gone-free
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UnTrap for YouTube
Yevhen Tretiakov
UnTrap is a Safari extension that focuses on giving you a distraction-free YouTube browsing experience. It comes with oodles customization options so you can truly tailor it to your liking. It even includes password protection and video filters.
Source Url: http://appadvice.com/apps-gone-free