TrollStore by iOS developer opa334 has been all the rage as of late. This handy utility lets iOS & iPadOS 14.0-16.6.1 and 17.0 users perma-sign .ipa files on their iPhone or iPad without having to re-sign those apps every seven days (or yearly, depending on the type of Apple developer account you have) as you would normally need to do when sideloading with a solution such as AltStore or Sideloadly.
How to install TrollStore on jailbroken devices with TrollStore Helper
