Use the AcceleroLog 1.1 app on an iPhone
How to use the AcceleroLog 1.1 app on an iPhone This is one high tech app. AcceleroLog track the X, Y & Z axis and will log it to a file. You can also adjust the Sample Rate or Give it a Priority Boost in the settings. This is a great app for those developing apps for the iPhone. You can download this via Installer.app from the Ste Packaging Source.