Your free memory cleaner is definitely a problem. The world’s best memory cleaner is built in to all Unix-based operating systems. Contrary to belief having a clean memory is bad for your device; for optimal efficiency RAM should be around 80% utilized. If you “clean” it regularly this significantly slows down your device and consumes extra energy, because swapped out code segments must be constantly reloaded. If you are have a freezing problem that has nothing to do with how clean memory is; running a cleaner will make it worse. You need to diagnose the freezing problem (which hundreds of millions of iPads don’t have), after you remove all traces of the cleaner (which may actually be impossible, because they embed into the operating system). Usually the only way to get rid of such dreck is to restore to factory settings, then set up as new.