The Shadow cloud gaming service saw its app removed from the App Store in March 2020, before access was restored in May. Apple has now again removed the app. Shadow provides streaming access to “a full-featured high-end PC to run Windows-based applications,” and is most popular with gamers. It allows subscribers to stream up to 4K at 60fps, or 1080p at 144fps.
Link: Shadow cloud gaming service again removed from App Store