C-Time is an iPhone app developed by Siegwart Software that helps you keep track of how much time you spend at specific places. Whether it's work, school, or the gym, C-Time uses a geofence system to automatically record your time spent at these locations on a daily, monthly, and yearly basis. No need to manually start the app or press any buttons - C-Time will register your entry and start counting your time as soon as you arrive at your defined places. When you leave, it will automatically stop counting.

Features include the ability to manually start and stop the counting, edit or modify recorded times, and export or email your time data. Additionally, C-Time can notify you when you arrive or leave a place with summary information. You can even post your time on social media platforms like Facebook, Twitter, and Sina Weibo.

With C-Time, tracking your valuable time spent at your office, gym, or any other place of interest is made easy. Please note that the automatic mode requires the geofence system and is compatible with iPhone 4, iPhone 4S, iPhone 5, iPhone 5C, iPhone 5S, and newer models.

Please keep in mind that the app works best when your phone's Wi-Fi is enabled, and it utilizes the same geofence feature as Apple's "Reminders" app.