We just updated XKit to have very minimal functionality on Tumblr’s mobile site. This means that Firefox for Android users (and hopefully Safari for iOS users once we get that funded) can add XKit extensions and use a couple features.

Word of warning: the extension browser is still formatted for desktop and therefore a pain in the ass to use. It should be painful but functional, at least until we redesign it for mobile. Consider this a very early Beta until the dust settles.

Features we know work:

• Wrap tags (in Tweaks)
  
• Anti-Capitalism
• Remove mobile app banner (new mobile-only option in Tweaks)

Features we know don’t work:

• Anything that adds extra buttons at the bottom of posts (Post Archiver, etc.)
• Timestamps
• Anything that alters the post window (Editable Reblogs, View My Tags, etc.)
• Anything that requires the sidebar to work properly
  

Everything else you may want to try comes under a common sense disclamer. We haven’t removed the option to install things that don’t work yet, so don’t download Tags on Sidebar and expect things to work on mobile where the sidebar isn’t even a thing. Things that cause horrible breakage should be reported to new-xkit-support.