The latest app to bring out my inner math geek skills is GoSum, an addictive mathematical iOS puzzle game that tests numerical skills kind of like Words With Friends tests your alphabetical skills. All you need to do is strategically place numbered tiles on a board to achieve points. It’s a pass and play type game or you can play against your Facebook friends. You can rack up some fairly high points when you start to build off of each other’s equations. And of course, there are bonus tiles for even bigger points and you can show that score off on the leaderboards. GoSum definitely adds up to a lot of fun.