If you haven’t already heard, there’s a useful new perma-signing utility for sideloadable apps in town called TrollStore by iOS developer opa334, and since it works with both jailbroken iOS & iPadOS 14.0-14.8.1 devices and non-jailbroken iOS & iPadOS 15.0-15.1.1 devices, it really seems to be taking the community by storm.
TrollStore perma-signing utility adds better support for app plug-ins & other quality of life enhancements