In fact, did you realize that many of the best ones are free? Here are our picks for the most useful free apps available.
View financial news, stock quotes, company descriptions, price charts, market trend analyses, and more.
Get up-to-the-minute tracking information on all the packages you've sent or are expecting.
View millions of job listings from thousands of company Web sites and job boards.
Tired of your apps crashing all the time? Use Memory Sweep to free your iPhone's memory before opening up demanding applications.
If you're an Apple MobileMe subscriber, you can use this app to view your online file storage.
Whiteboard: Collaborative Drawing
If you're using your phone to conduct a virtual meeting, use this whiteboard app to create a virtual whiteboard. It works over WiFi or Bluetooth connections.
If you can't make it through the day without your favorite Starbucks drink, you'll love this app. It directs you to the nearest locations.
Drync Wine Free
You won't be confused in wine shops if you've got this handy app. It offers information and pricing for over 1 million wines.
This app plays each note in standard tuning so you can use it as a reference to tune your guitar.
Never be stuck in traffic again. This app offers accurate, real-time information on current traffic conditions.
Save articles you'd like to read on your browser, and then call them up with this incredibly easy app.
Tired of not knowing when your favorite bands are coming to town? With JamBase, you can create a list of favorites and then view a list of local appearances.
MapQuest 4 Mobile
This goes beyond the iPhone's own Maps app with the ability to save routes on MapQuest.com and then view them on your phone.
It's the ultimate guide for any bartender, with recipes for over 7,900 drinks. Check out the Liquor Cabinet feature, which only uses ingredients you have on hand.
NYC Subway Map
Forget clumsy foldable maps; this handy guide puts the NYC subway in your pocket. You can also find apps for other cities' subway systems.
View local restaurants that have open tables and then make reservations through the app.
This will become one of your most-used apps. It turns your iPhone into a wireless remote for controlling your iTunes or Apple TV.
Runner's World Shoe Shop
Let the experts at Runner's World help you find the best shoe for you with these video guides.
Movie lovers, you should absolutely have this on your iPhone. Use it to find movies and showtimes for nearby theaters.
You'll never look up a number for a taxi service again. Just tap a button on Taxi Magic and a car will come for you. It works like magic in over 25 U.S. cities. In over 4,000 other U.S. and Canadian cities, it gives you a number to call.
Waze offers real-time traffic updates created by other Waze users. It also alerts you to police traps, road construction, and more.
This location-based app will tell you about hot local restaurants, movie times, weather forecasts, traffic conditions, and more.