After a few weeks of games, we're going with more practical apps for a little while here, so here's an iOS version of the famous thesaurus reference book. Roget's Thesaurus is pretty much the name in finding words that can work in the place of other words, and a company called Mobifusion has worked with the real thing to bring it to the iPhone in a searchable form. The app lets you browse through 30,000 words and all of their synonyms, change text sizes on the fly or just flip through if you want to browse that way. You may argue that there are free thesauri (?) available online, and you'd be right, but it's nice, especially if you use one often, to have it available and ready to go on the iPhone whenever you want. The official Roget's Thesaurus app is US$2.99 on the App Store.
And if you don't want to pay a few bucks (just consider how much a paper copy of the book would cost -- it's worth it anyway), there's always the FreeSaurus. That works well, but there are ads in it, and as you should know by now, there's no such thing as a free