yes, here is a 'Private Browsing'

I haven't explored this part of Firefox for Android, but based on my knowledge of Firefox for the desktop, you usually need external software because any browser add-ons you install can be disabled or removed.

I found this article in a search, and I imagine many other sites have suggestions as well: How to make Android child friendly | News | TechRadar.

Hi maddy121, I don't think private browsing mode will help the parents!

There are two ways to open a new Private Window. Open a new, blank Private Window At the top of the Firefox window, click the Firefox button and select New Private Window. A new Private Window will open. Open a link in a new Private Window Right-click on any link and choose Open Link in New Private Window from the context menu. A new Private Window will open with the link you selected.

hi jscher2000,i understand,what u want to say :)

There is talk and perhaps future plans for creating guest and user profiles for Firefox on Android. Stay tuned.

There are third-party parental control programs for Android. I haven't tried any of them, but try searching the Play store. Usually you do have to pay for them.

I've found several apps for android but none of them prevent the users from logging out and disabling the controls. Im looking for something that wont let my kids look at anything pornography on any browser and not let them change any of the settings.

I'd suggest going with something like OpenDNS. This lets you set it at the router-level, so you have to have a password to change it. I use it on my own network to block malicious sites. The downside to this is that it only works when you're connected to your network - If you're on 3G/4G, it doesn't work.