I've been trying out the DuckDuckGo browser lately on mobile. It uses the Chromium backend, so some sites work better in it than in my normal Firefox.

The neatest feature of the browser is the ability to generate random email addresses in signup forms, and those emails all get forwarded to your real email address. As it forwards the emails, it removes trackers from them. You can click a link in one of the forwarded emails to disable that address from being forwarded any more if it gets spammy.