Hot on the heels of a phenomenally successful release of the desktop version of Firefox 4, Mozilla has just launched an Android version of the browser.

If you're a Firefox user and an Android owner, then the browser's worth downloading as it brings the Firefox sync, giving you access to your bookmarks, open tabs, form data, and passwords across computers. Firefox 4 also has a nice feature that hides the browser controls when they're not in use, something that can take up the precious real estate on the smaller phone screen.