How to Download IPA Files on macOS High Sierra

macOS, or more specifially since iTunes v12.7, no longer stores the IPA files.

There are a number of ways to find an app's IPA, such as the many untrusted, dangerous sites with their signed IPA.

Be safe, read on.

1. Download Apple Configurator 2

This is Apple's app for configuring multiple devices for schools and businesses.

Download it from Mac Store here.

2. Sign In

Go to the app > Account > Sign In using your personal iTunes account.

3. Update The Apps

Go to Action > Update, and select the apps to update (or all).

4. Find in folder

The IPAs will be here:

~/Library/Group Containers/K36BKF7T3D.group.com.apple.configurator/Library/Caches/Assets/TemporaryItems/MobileApps

Note that they are in a cache, which means it will be deleted anytime, so copy it to somewhere while it is there.