Smart Takes app allows you to quickly record videos with your iPhone. To use the app is very simple:
1 - To start recording videos raise the iPhone to the recording position shown on the app initial screen.
2 - To stop recording videos move the iPhone down.
3 - Once the recording is stopped you can keep the video or delete it by simply tapping on the correspondent button on the screen.
4 - Or you can just simple raise the iPhone again and the app will automatically save the current video and start recording a new one.
Note that all videos are stored on your camera roll and are conveniently organized in an album called "Smart Takes".