To install an IPA file that isn't from the official App Store, you generally need a sideloading tool. This is a popular "no-jailbreak" way to install IPA files.
Be cautious when downloading IPA files from unofficial sources. These files can sometimes contain malware or tracking scripts. If you are looking for a standard photo widget, many high-quality options are available directly on the App Store , such as the native widget or Widgetsmith . Are you trying to install this specific file right now, or
: Compiled for 64-bit processors (standard for modern iOS devices).