iOS ad spend is now down 32% from its peak in 2021.

In early February, mobile advertisers that have both an Android and iOS app split their buying almost evenly between Android and iOS. Between February 2 to 7, marketers spent 56.16% of their budgets on Android app install campaigns and 43.84% on iOS.

But last week, from June 14 to June 20, the split was 70.29% to 29.71%.

That's a massive difference in just four months.