Yes, some apps clone a phone. Parental control apps can do that. These apps are not made for parents and kids. It is used by anyone who wants to monitor their loved ones regardless of their age.
AirDroid Parental Control app is a free parental control software that does phone cloning. Think of it as a one-stop-shop app. It works on Android, iOS, Mac, and Windows platforms. It has mobile and web versions to make the experience smooth.