This is a common tag used by specific "scene" groups or IPA cracking tools (like BFIDump) to signify that the binary has been decrypted for sideloading. Final Verdict If you are looking at this specific IPA for sideloading :
This specific "univ-64bit" build is known for its stability on older hardware running iOS 14. It handles heavy background syncing across different protocols (CalDAV, Exchange, etc.) without the battery drain often seen in poorly optimized calendar apps. In the context of the filename you provided: This is a common tag used by specific
Sideloading IPAs from unofficial sources carries significant security risks , including potential malware or data harvesting. Since calendars contain sensitive location and contact data, using an official version from the App Store is highly recommended. In the context of the filename you provided:
os140 (Optimized for or requires at least iOS 14.0). 5.50.7 (A stable
5.50.7 (A stable, late-lifecycle build of the "v5" series).