Hi there!
I created an app that makes it possible to switch which app the Android subsystem thinks is the installer of the app.
That’s mostly useful if some app refuses to work unless it’s installed from Google Play. Now you can easily make it work with just a few taps.
This is mostly an evolution of my guide for doing the same thing manually: How to modify Android app so it thinks it was installed from Google Play
And it has support for the binary xml format that’s in use since Android 13 (5.0.0.73 for most devices).