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Average ratingGreat
4.0/ 5

Based on 8 reviews

538%
425%
338%
20%
10%
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About U-challenge

The target market for U-challenge is anyone who has an Android or IPhone device and a Facebook account. Almost half a billion smartphones were sold in 2011, a figure which will be eclipsed in 2012. Android and IOS accounted for 68% share of all devices. Facebook has over 1bn users.