DuckDuckGo has this feature. It blocks many trackers in other apps on your device. And I hate the fact that I have to download another browser to have App Tracking Protection. Firefox, please add this feature to your browser.
1Blocker X does a good job of this on iOS and I think there are some Android options like the DDG app as @Anonymous suggests. I think if Mozilla did an app, maybe make it a separate part of their VPN app or bake it into Firefox, it would go some way to show people how serious it is about privacy. It may even increase revenue if it worked side by side with the VPN.
I mention the VPN app because these App Tracker Protection with DDG or 1Blocker actually use an internal VPN to do the blocking. Maybe make this free as it works within the device and the actual VPN service paid for as it relates to an external connection?
i like to have this too because i use the duckduckgo version for that but i hate it that i need to install that just for that because it isn't my default browser.
Mozilla needs to make app tracking protection too. Many people downloaded ducduckgo for just that. Mozilla can add it in firefox, make a separate app or add it in mozilla vpn like free plan haves app tracking protection, paid plan 1 haves app tracking protection and vpn or paid plan 2 haves app tracking protection and vpn at same time(if possible) or make paid plan 2 just paid plan 1.