Nowadays, a lot of people like to be able to update their blogs (or Facebook sites, Twitter accounts) on their smartphones. Ditto for reading and browsing these sites. Tumblr has apps for iPhones, iPads and Android phones that let you do so quite easily [source: Houston]. It's a tad tricky to find them, though. Log into your account, click on your blog name and look for the Tumblr copyright at the bottom. There's an Apps link a few words down from the copyright. If you click on it, you'll be taken to the page that contains the Bookmarklet and Mobile info. Select your mobile device's link, and you'll find yourself on the appropriate site for the free app. Or download it directly onto your phone from the iTunes Store or Google Play.