HanDBase, from DDH Software, is an easy-to-use relational database system ported from Palm OS to the iPhone. (HanDBase sells for $9.99 from iTunes.) The application ships with a starter gallery of databases that include a checkbook, customer list, shopping list, movie list, password keeper, and billing log. If none of the included databases meet your needs, you can create your own or access more than 2,000 database templates to find one that satisfies you--all databases are free to download.
Create your own customized database
My IT career started as a software developer and database designer, I've been exposed to a variety of databases running on different platforms. HanDBase is the first I've used on a handheld device, and it works better than I expected, even on the iPhone's small screen.
To give HanDBase a workout, I launched the app on my iPhone 3GS and started developing a database template for testing various platforms and development tools. … Read more