Capture is an app that does just one thing. And if that thing is useful to you, this could be the best 99 cents you'll spend today. Capture is a video-shooting app that starts recording as soon as it is launched.

Hit the icon on your home screen or – even better – the dock, and you'll be shooting one second later. No fiddling to switch between still and video, no adjusting settings, and no missing the moment you want to record.

Once you get going, you can make a few adjustments. You can tap to shift focus, hit another button to toggle the rear LED flash, and of course start and stop recording.

The app also works on the iPad 2, although not with a native interface. I tried it out and it does just what it says it does, saving the captured footage direct to the camera roll. It's like having a dedicated video-record button on the home screen. You'll never miss a skateboarding dog ever again.

Capture — The Quick Video Camera [iTunes via MacStories, an Apple enthusiast site]