For Xiaomi users fed up with MIUI, CustoMIUIzer was a monster. However, in 2021, only a subset of its features worked via LSPatch (specifically those affecting MIUI system apps like Launcher, Settings, and SMS). Full systemUI control still required root/LSPosed.
This meant that by mid-2021, you could take a stock app (like a social media client or a game), inject a module that removes ads or adds features, and install that patched APK on any Android device—rooted, unrooted, or even an emulator. lspatch modules 2021
: You only patched the apps you wanted to change, leaving the rest of the system "clean." For Xiaomi users fed up with MIUI, CustoMIUIzer