Wow! $139 worth of in-app purchases!!!
Holy smokes, that is quite a bit of money!
But just think....you can get a package of five thousand hints for a mere $100! There are 180 photos altogether if you buy each and every one of the photo package deals. That gives you a grand total of 28 hints for each of the 180 photos, each of which has a total of six differences!!! Wow, such a deal, eh? ((~.~))
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Spot the Difference With Friends! 2 Pics - What's the Hidden Difference?