What the requirement means in real iPhones

An iOS version number is abstract; the iPhone it rules out is not. The median app on the store requires an iOS old enough that it still installs on an iPhone 6s — a phone from 2015, roughly 11 years old. In other words, the typical app is not chasing the newest hardware at all; it is happy to run on a handset most people would consider ancient. 72.2% of apps still install on an iPhone 6s, and only 27.8% have pushed their floor up to an iPhone 8 or newer.

Most apps meet you where you are

The single most common iOS band is iOS 14–16, and only 15.4% of apps demand iOS 17 or newer (an iPhone XR or later). Developers know that requiring the latest OS shrinks their audience, so most set their floor a few versions back — recent enough to use modern tools, old enough to still reach phones that are several years old.

A long backward-compatible tail

34.6% of apps still install on iOS 13 or older. Some are older apps that were never updated; others are deliberately lean utilities that see no reason to abandon working phones. Either way, they are why an aging iPhone is rarely as useless as it feels — most of the store still opens on it.

The bottom line

If an app will not install, its minimum-iOS line is usually why, and it is worth checking before you assume your phone is broken. But upgrade pressure from apps is gentler than it seems: the newest-OS-only app is the exception, and the typical app still runs on an iPhone from years ago. Your phone ages out of the App Store far more slowly than the marketing cycle suggests — each app page here shows the exact "Runs on" floor so you can check before you download.