I apologize for suggesting ES File explorer. I was not aware that it was purchased by Cheetah.
As I mentioned, I have not been updating my existing copy for a while... And I am not going to update it anymore.
This is not the first app that Cheetah took over. Earlier, they bought a very good QuickPic Gallery. At least that was transparent, and they changed the name. Many people stopped using it right away (I stopped updating it and froze the version). I guess Cheetah learned the lesson, and with the takeover of EStrong did not change the name significantly. Sneaky b*rds!