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Serving a Cause, 25 Cents at a Time

IN February, Noah Fradin turned 18 — finally. It’s a relief, he says, that he no longer needs his mom to co-sign the nondisclosure agreements and other documents related to his plan to change the world.

Noah Fradin, 18, runs his company, CherryCard, out of his bedroom. It lets retailers give customers a voucher for 25 cents, to go to various charities.

Mr. Fradin, a high school senior and budding entrepreneur who lives in Studio City, Calif., is the creator of CherryCard.org, a new Internet start-up that seeks to make it easy for consumers to give money to the charities of their choice.