Tenjin said app and game publishers shifted their ad budgets to Android.

Tenjin: Apple’s 2021 privacy cut revenues for 40% of mobile advertisers

Mobile measurement firm Tenjin, which works for numerous indie and mid-size mobile game publishers, said its survey showed that 39% of mobile advertisers, or two in five, said Apple’s privacy moves hurt their revenues in 2021.

In a poll of 302 mobile advertisers (mobile game publishers and other app makers) with Growth FullStack, Tenjin found that 75% said that Apple’s changes put the future of their businesses at risk. And 55% said that mobile marketing was more difficult in 2021 than in the previous year.

Last year, Apple modified the opt-in procedures for its Identifier for Advertisers, which mobile game and app companies used to track the effectiveness of ads. By making the opt-in more visible, the bulk of users opted out not to be tracked. As a result, user-acquisition campaigns were no longer easy to do and advertisers could no longer target consumers with precision.

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Dean Takahashi

Dean Takahashi is editorial director for GamesBeat. He has been a tech journalist since 1988, and he has covered games as a beat since 1996. He was lead writer for GamesBeat at VentureBeat from 2008 to April 2025. Prior to that, he wrote for the San Jose Mercury News, the Red Herring, the Wall Street Journal, the Los Angeles Times, and the Dallas Times-Herald. He is the author of two books, "Opening the Xbox" and "The Xbox 360 Uncloaked." He organizes the annual GamesBeat Next, GamesBeat Summit and GamesBeat Insider Series: Hollywood and Games conferences and is a frequent speaker at gaming and tech events. He lives in the San Francisco Bay Area.