There are many thousands of apps. Whatever your goal, as Apple's erstwhile advertising campaign proclaimed, "There's an app for that." But some apps are simply must-haves--whether for their functionality, their interface brilliance, or just their entertainment factor. Here are ten apps your new iPhone shouldn't be without.
1. Google Maps (free)
When it comes to online mapping services, Apple has made inroads, but Google still rules. The free Google Maps app gives you more than just maps: It also provides turn-by-turn navigation for driving, walking, and bicycling, and—Apple Maps's one major omission—public transit directions. It's quick and easy to use, too.
2. Reeder 2 ($5)
Silvio Rizzi's Reeder is an RSS reader, and if you're not yet on the RSS bandwagon, you should be. The app, which can sync with your favorite RSS services or work as as a stand-alone reader, presents a simple interface for reading the latest articles from all your favorite websites. Tap a headline, and the article slides into view. If the feed in question shows only a summary, Reeder's built-in Readability support can help: Reverse-pinch on the text (or tap the Readability button), and Reeder quickly loads the rest of the article automatically. Tap and hold on links to bring up a sharing window; Reeder makes it easy to email links, save links to Instapaper (another great reading app), post links to various social networks, and more.
3. Vine (free)
Who knew six seconds of video could be so much fun?
Vine is a social network based around a smartphone app that lets you create and publish six-second videos that you can share with the world. Vine is easy and fun to use, and creating and watching Vine videos is strangely addictive.
4. Flickr (free)
Apple's Shared Streams let you share your photos with your close contacts, but Yahoo's Flickr service and app opens that to the world. View images from your friends and fellow Internet denizens; upload images to your own Flickr account; and mark photos that make you smile as favorites.
5. Kindle (free)
Your iPhone is a lot smaller than a Kindle, but it can emulate one pretty well. With the free Kindle app, you can read ebooks and magazines you've purchased from Amazon's Kindle bookstore.
Unsurprisingly, the interface is simple: You swipe to turn pages, tap and hold on a word to see its definition, and tap and drag to highlight text. You can adjust the color scheme of your virtual book (black text on a white background, the inverse, or sepia tones), as well as change the font size. Kindle also lets you search books for specific text, jump to individual chapters, and post to social networks about favorite passages. Using Amazon's Whispernet technology, the app syncs your current page with Kindle Cloud Reader, Kindle for Mac, Kindle for iPad, and actual hardware Kindles. The only downside: Apple's rules prevent Amazon from including a link to its bookstore; you'll need to hop over to Safari to buy more books, though this workaround can make that process a bit less painful.
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