TrollStore uses a CoreTrust bug to permanently sign IPA files without expiration. However, this does not work on modern iOS versions (16+).
If your device is jailbroken, iGameGuardian is often preferred for its deeper system access. game+guardian+ipa+file+install
Game Guardian’s developers have never released an official iOS version. The tool relies on low-level memory access that is nearly impossible to achieve on a non-jailbroken iPhone due to: TrollStore uses a CoreTrust bug to permanently sign