The main differences come down to features inherent to Android itself. You can set Firefox Focus as the default browser, for one thing. And if you switch to another app, you'll get a reminder notification that lets you erase your history without skipping a beat. Is there a rush to embrace this if you've already found a privacy solution on Android? Probably not. It's certainly easier than managing add-ons, though, and Focus' extreme minimalism (it's not much more than a browser window) might be appealing even if you're not that concerned about advertisers.