Appstore Ios 9.3.5 [upd] -

. Because modern apps are built for iOS 15, 16, or later, many popular titles in the App Store will display an error message stating they require a newer version of iOS. However, Apple maintained a crucial feature for these legacy users: "Download an older version of this app."

A controlled test of 50 popular app categories on iOS 9.3.5 revealed: appstore ios 9.3.5

While direct downloads of new apps often fail, there are established workarounds to bypass version restrictions: "Purchased" Tab Trick App Store > Purchased appstore ios 9.3.5