How to block porn on android

Hi all,
I use my android smartphone for Internet access. What is your suggestion for keeping safe from porn on Android? Chrome browser has the "safe search" option, that's good, but if I remember the porn site address and type it then Chrome doesn't block it...
I still need to use internet on my phone for work, Is there a good way to uninstall Chrome and replace it by a safer browser or force Chrome to block porn sites on my phone?