WALL STREET JOURNAL - In-app fees are Match's biggest expense, said CFO Gary Swidler. A federal judge in California last week ruled that Apple can't block app developers from sending their users outside its app store to pay. The case was brought by videogame company Epic Games. Separately, lawmakers in South Korea last month passed legislation that requires Apple and Google to open their app stores to alternative payment methods. An Apple spokesperson said the company is reviewing the California court ruling. Regarding the new law in South Korea, Apple said it believes the measure could undermine users' privacy protections, among other effects. "We believe user trust in App Store purchases will decrease as a result of this legislation," the company said. By offering a 10% discount on subscriptions, Match might be able to persuade about a third of its Apple users to pay directly, providing the company with an additional $80M in gross profit, predicts Jake Fuller, an analyst at investment firm BTIG.