It’s a Google thing, not necessarily an app thing. Apps will have a minimum SDK level (basically the oldest Android version the app can run on) and a target SDK level (the Android version that the app is optimised for, which is usually the latest Android version). Google keeps increasing the SDK level requirements for apps to be published on the Play Store, so if an app is too old and hasn’t received any updates, you will see that message. But chances are that the app will run just fine if you install it from an APK file.
It may seem ridiculous but it’s good because it prevents people from installing super old apps, which may leave room for exploits in modern versions of Android.
It’s a Google thing, not necessarily an app thing. Apps will have a minimum SDK level (basically the oldest Android version the app can run on) and a target SDK level (the Android version that the app is optimised for, which is usually the latest Android version). Google keeps increasing the SDK level requirements for apps to be published on the Play Store, so if an app is too old and hasn’t received any updates, you will see that message. But chances are that the app will run just fine if you install it from an APK file.
It may seem ridiculous but it’s good because it prevents people from installing super old apps, which may leave room for exploits in modern versions of Android.