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How a Giveaway Helped a Developer Boost App Store RankingsAn iPhone app for currency conversion got a ranking boost.

ByMarty Jerome•

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Free For a Day
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Branko Zabala, CEO of Santa Cruz, Bolivia-basedPinch Multimedia, was disappointed with currency-converter apps. Not only were they clunky to use, they were limited to just, well, currencies. Zabala's idea was to develop a super-converter, one that could make exchanges with real-time rates for 150 currencies and handle 16 other conversion categories, such as weight and temperature.

The result was Converter!, his $2.99 iPhone app. But Zabala knew that fighting for space in the crowded marketplace would be a challenge. So he came up with an idea: Give away his premium version for one day.

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