How to delete the iOS apps stored on Windows 10
Windows 10 users have to go through a similar process of finding the iTunes directory through File Explorer. Again, though this will vary between installations, but it can usually be found in the user’s Documents directory, within the enclosed Music directory.
The file path within the iTunes directory is the same as for macOS, by accessing iTunes Media and then Mobile Applications. As with macOS, the .ipa files can be deleted individually or the entire directory can be removed.