iPhone Approll

The B&N Bookstore app lets you read book reviews.

(Credit: Barnes & Noble)

Barnes & Noble has joined the iPhone app generation. The world's largest bookstore announced on Monday its B&N Bookstore app, which is available for both the iPhone and iPod Touch. Among other things, users can browse books and reviews, and find store event information.

One of the first big brick-and-mortar retailers to create an iPhone app, Barnes & Noble partnered with LinkMe Mobile and Spotlight Mobile to design phone-friendly features.

One of them lets users snap a photo of a book cover, which then links to more information about the book. Although this seems a bit redundant--since to take a photo of a book you'll have to have it in hand--it could prove helpful in quickly scanning a friend's book collection and later reading reviews, synopses, and the like. Yes, you could do that with a Google search, but a photo couldn't hurt, right?

The app also includes a store locator, recommendations on other books that might appeal, a store events calendar, online purchasing, and video clips of interviews with authors.

Other apps for bookworms include Amazon Mobile, which lets users search, shop and read reviews; SnapTell, which, like the B&N Bookstore app, lets users take a picture of a book cover and get information on the book; and BookBargin, which compares prices of books at different online stores. These apps and the B&N Bookstore app are free.

Barnes & Noble's president, William Lynch, said the company decided to create an app based on an increase in the store's mobile traffic.

HP now sells an HP 12C calculator app for the iPhone.

(Credit: Screenshot by Stephen Shankland/CNET)

It looks like a fourth generation of my family is going to be introduced to the ways of reverse Polish notation calculators.

That's because my three-year-old son, an iPhone fan in his own preschool way, is about to be exposed to Hewlett-Packard's new iPhone application that fully emulates the company's 12c financial calculator. The $14.99 application is accompanied by a $29.99 emulator of the 15c scientific calculator, which is better at handling trigonometry and integration than mortgage payments and net present value.

All that's missing is the pocket protector-like iPhone case, my colleague Ina Fried cracked as she mocked my nerdish tendencies.

(Credit: YouMail)

YouMail's visual voice mail app for iPhone may look less sexy than the sleek, crafted application interfaces we've grown used to, but in its first effort, functionality will be more important than form.

This last weekend, users of YouMail's freemium Visual Voicemail Plus service were able to start reading and responding to voice messages from iPhones. Like rival visual voice mail services, YouMail lets you manage voice messages like e-mail messages in exchange for making the service your default mobile answering machine. In addition to playing back voice messages in any order you choose, you're able to save, delete, and respond from YouMail.com or from your phone.

Transcribing the voice call into text costs extra with a tiered pricing plan. The personalized greeting messages you can tailor to favorite callers is free.

Future versions will likely take advantage of the push notification slated for Apple's iPhone 3.0 software update, due out June 17.

To celebrate the release, YouMail is announcing a contest on June 16. YouMail will enter anyone who downloads Visual Voicemail Plus on the iPhone or BlackBerry in a drawing to win a year of its Read-It Select Unlimited free transcription service, valued at $329.99.

YouMail is available on BlackBerry and iPhone, and can be found as a beta app for Android.

If you haven't figured this out already, I'm a serious airline geek. Yes, I'm the kind of person who keeps track of all his flights and I can identify planes as they taxi by at the airport. Want to know which airlines flies nonstop between San Francisco and Sydney? Well, I can tell you (United and Qantas). Some would call it an obsession, but I think that it's just an interest.

Airport Status

If you're like me, you'll be delighted to know that the iPhone App store has quite a few options to indulge your passion. Without ever leaving your iPhone, you can check for delays, find the best seat on your flight, learn facts about your aircraft, and find your departure gate at the airport.

The following is a list of apps that I've used on CNET's iPhone. When I'm not using them just for fun--like I said, it's an interest--they have come in handy quite a few times. The titles that I've highlighted below aren't the only such apps available, but they are the ones that I've used. If you have other picks, be sure to tell me about them below.

Airport Status
99 cents

This app won't show delays for specific flights, but it will show general delays affecting U.S. airports. This is especially useful when your home airport is San Francisco International--due to low clouds it often suffers from "ground stops" where flights are held at their departure airport until the weather improves. Newark Liberty is another airport that's constantly on here. New Yorkers and Jerseyites, take note. ... Read more