Sideloading copyrighted IPAs technically violates Apple’s terms. While Apple rarely sues individual users, they can revoke the free 7-day signing certificates if they detect abuse.
Same 7-day expiration unless you pay for a $99 Apple Developer account.
stands for iOS App Store Package . It is the archive file format used by Apple to distribute applications for iPhones, iPads, and iPod Touch. Think of it as the iOS equivalent of an .exe file on Windows or an .apk file on Android.