Apple is on the AOM board, and introduced HEIF before AVIF even existed (HEIF shipped in 2017 in iOS 11 and macOS 10.13, the first AVIF images were published la

Apple is on the AOM board, and introduced HEIF before AVIF even existed (HEIF shipped in 2017 in iOS 11 and macOS 10.13, the first AVIF images were published late 2018, and the format was finalized early 2019). Apple has also shipped AVIF support in iOS 16 and Ventura, and AVIF-enabled Safari in the same. HEIF support was never enabled in Safari. Still isn't. There is no war. HEIF support was mostly a way to optimise storage on iPhones.