Metronome is just that - a metronome for your iPhone. Musician geeks rejoice.

Available via their site.

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Lockbox is a password & secret information storage program for the iPhone. It stores passwords for websites (or any system), credit card info, or any secret information you need to keep ready at hand, encrypted on your iPhone.

Available via their site.

http://code.google.com/p/iphonelockbox/

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A simple and usable to do list for your iphone. Thre categories including work, private, and family. You can add items under each category and set the importance of each item.

Available via installer or their site

http://www.include7.ch/mobiletodolist

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