Geologger allows you to store your position during photo shooting or traveling.
All positions are stored in a database locally on the device (no internet connection is required), and organized into tracks. Each track can be downloaded as GPX file on computer via a web interface.
For any version prior to iOS4, due to limitations imposed on third-party applications by Apple, Geologger must run in the foreground and the device must not be in locked state to allow the application to receive location updates.
Log duration depens on battery charge, the use of a backup battery pack is suggested.
Continued use of GPS running in the background can dramatically decrease battery life.