PORN BLOCKERS

I personally use those:
https://forum.nofap.com/index.php?t...ower-an-aid-easy-streaks.272658/#post-2490733

 

I use Truple Web Filter (a VPN), Blocker X and Incoquito (to switch completely off the incognito mode on Chrome).
Every App mentioned above is completely free (except for Incoquito); you can find them on the Play Store (don't know if they're avaible on the App Store).
However, pay attenction: VPNs and porn blockers don't represent the solution to your problem. In fact there are no porn blockers and VPNs which works at 100%: some sites, a few image aggregators will always slip out and be accessible (I can assure you this, because I've been able to watch porn with all the turned-on apps that I mentioned before).

The best way to stop watch porn is creating new habits, keeping your head busy with tasks and, obviously, using all will-power you have.

If you can't stop watching compulsively porn, you should ask for help to a psychotherapist.