TimeClock (location-based) by Artem Grinstein
The TimeClock with location events tracks your time automatically as you enter or leave the office!
The TimeClock will help you track your working hours. Do you want to know when did you arrive or leave the office and what were you working on? Then this app is right for you.
And the best thing is that the TimeClock can track your time automatically as you enter or leave the office (available for iPhone 3GS and 4). You can also easy review and change times and comments manually.
The weekly and monthly reports will help you export times to your preferred spreadsheet application.
How does it work? You just need to indicate where do you work or select it on the map. The TimeClock will then track your location and – with the use of intelligent algorithms – calculate the hours you have worked even if the application is not running!
The TimeClock uses a low-power way to track your location and only significant location changes are monitored. Plus, you will have full control over your data: the information is stored only in your iPhone.
Developer Website: http://greenstones.de/timeclock/