Why would a non English speaking non technically literate person go and install a random parental control iOS app? I have half a dozen such people in my family

Why would a non English speaking non technically literate person go and install a random parental control iOS app? I have half a dozen such people in my family and they don't even know how to open the app store, let alone the password for it. I install stuff for them when they need it, which is like maybe once in a year.