• MobileBeat, Thursday, July 15, 2010 1:46 PM

Mobile retail startup Shopkick just closed a second round of funding worth $15 million, and led by Greylock Partner. Late last year, Palo Alto, Calif.-bases startup debuted CauseWorld, an iPhone and Android app that lets users earn money for charity by "checking in" to stores and restaurants. According to MobileBeat, "That was just an experiment to test out the concept behind its main Shopkick app, which the company plans to launch this summer."

Indeed, cofounder and chief executive Cyriac Roeding calls the coming app a "selfish" version of CauseWorld, which was downloaded 550,000 times in five months. According to Roeding, Shopkick wants to make a "big push from the check-in to the check-out," thus encouraging consumer engagement even after a purchase has been made. The company previously raised $5 million from Kleiner Perkins Caufield & Byers' iFund, along with LinkedIn founder Reid Hoffman. Kleiner, Citi Growth Ventures & Innovation Group, and Ron Conway's SV Angel also participated in the round.

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