I'm using the power of JavaScript and Dynamic HTML to create some small client-side Web applications for the iPhone. These applications are essentially designed for me, but since they're accessible on the Web, all iPhone users are welcome to use them. They may not be the most gorgeous Apple-licious graphics you're accustomed to (I am graphically challenged, and dangerous when let loose in Adobe Illustrator), but I do place a high priority on functional user interfaces. Each application is optimized for usage and display on the iPhone.

For the scripters out there, these apps use scripts from the just-released second edition of my "JavaScript & DHTML Cookbook" (O'Reilly). And I saved lots of time by having my "Dynamic HTML: The Definitive Reference" third edition handy. It feels good to be able to practice what I preach. I've also assembled some iPhone Web Application Developer Notes for anyone interested in the thought processes behind my design.

Privacy Notice: No information that may be stored on the iPhone as a cookie (such as preference settings for one of my Web apps) is read by, or preserved on, the server. The server does, however, log your iPhone's IP address—but no personal identity information—when you request any URL associated with an application.

There are no implied or explicit warranties for these applications. Usage is on an "as-is" basis. Unless otherwise stated, I consider these applications perennially "under construction."

I welcome comments and suggestions directed to the name of the device ("iphone") followed by the "@" sign, and my domain, "dannyg.com". Enjoy!

• Restaurant & Bar Tip Calculator (v0.74 with Home Screen Icon) (http://dannyg.com/iphone/tipCalc/)
• Open this copy of the Tip Calculator (v0.75 with Home Screen Icon) in Safari/iPhone. New in iPhone 1.1.3! After you open this "local" copy in Safari/iPhone, tap the "+" icon at the bottom center of the Safari screen; then tap "Add to Home Screen" to add an icon to this "local" version onto your iPhone's home screen. The next time you need the Tip Calculator in a restaurant, tap the home screen icon to run the application, even if you are not within WiFi or EDGE range, or if you have Airplane Mode turned on. You may also save the program as a bookmark (or, if you sync your Safari bookmarks with your iPhone, drag this link to your Bookmarks bar for installation during the next sync). The entire application will be stored on your iPhone within the bookmark. The different version numbers differentiate the web-accessed and local versions, which are both functionally identical.