22. Brain Challenge

Not only are these 43 mini-games fun, they also exercise your brain. You'll find games designed to help you manage stress, develop creativity, improve memory, and more. Developer: Gameloft. Price: $9.99.

23. Break

Simple and addictive, this game will keep you busy smashing bricks for hours. If you've ever played Brickbreaker on a Blackberry, this game will seem extremely familiar. Developer: Jirbo, Inc. Price: Free.

24. Tetris

Sometimes you just can't beat the classics. This version of Tetris is every bit as addictive as the original and includes 15 different levels. Developer: Electronic Arts. Price: $9.99.

25. Labyrinth Lite

Based on the classic wooden toy, Labyrinth Lite tests your eye-hand coordination as you tilt your iPhone to maneuver a ball through a maze, avoiding holes along the way. The Lite version includes 10 levels, or you can purchase the full version for more maze layouts. Developer: Codify AB. Price: Free.

26. Sudoku (Free)

You can pay for an iPhone Sudoku app, but why bother when you can get a good one for free? This version has four skill levels and multiple color schemes. Developer: Mighty Mighty Good Games. Price: Free.

27. Chopper

This helicopter shooter game has surprisingly good graphics and seemingly endless levels of gameplay. Tilt the iPhone to control your flight, then tap the screen to fire at your enemies. Developer: Majic Jungle Software. Price: $7.99.

Healthcare & Fitness

28. Restaurant Nutrition

This app provides info on calories, fat, carbs, and protein for menu items from popular chain restaurants. You can also create a list of "What I ate today" or use the handy maps to locate a restaurant near you. Developer: Foundation HealthCare Network. Price: Free.

29. Epocrates Rx

Designed for medical professionals, Epocrates Rx contains up-to-date information, including photos, on more than 3,000 drugs. It even includes a handy Pill ID feature to identify "mystery pills." Developer: Epocrates. Price: Free.

30. Absolute Fitness

If you're serious about getting healthy, Absolute Fitness can help you track nearly every aspect of your diet and exercise. Set goals and record your progress; calculate how much you've eaten and how much more you can eat each day. Developer: Aqua Eagle. Price: $14.99.

Lifestyle

31. Save Benjis

Save Benjis combines the best of online shopping with the best of real-world shopping: while you're in the store with your iPhone you can look up prices online. It includes prices from more than 1,000 stores on more than 15 million products. Developer: Sol Robots. Price: Free.

32. Zen Garden

Take a moment to relax by raking your fingers through the virtual sand in your own Zen Garden. Then shake the iPhone to erase your designs before you draw something else. Developer: Peerium. Price: $.99.

33. Cocktails

Ever wondered what's really in a blood and sand cocktail? This handy app contains more than a thousand drink recipes from the well-known to the not-so-well-known. (By the way, the blood and sand has orange juice, scotch, cherry-flavored brandy, and vermouth.) Developer: Skorpiostech, Inc. Price: $9.99.

34. Catholic Calendar

See the liturgical calendar through the year 2300, including feasts, celebrations, saints days, and more. The "About Today" feature also contains links to help you learn more about individual saints. Developer: Universalis. Price: Free.

Music

35. Pandora Radio

Tell Pandora what kind of music you like, and it will create a customized playlist tailored to your taste. If you already use Pandora on your PC or Mac, just log in, and Pandora will remember you. Developer: Pandora Media, Inc. Price: Free.

36. AOL Radio

Listen to one of more than 200 free radio stations or any of the more than 150 CBS radio stations across the country. It automatically connects you to the nearest stations based on your location or you can set up a list of your favorites. Developer: AOL. Price: Free.

37. Shazam