Tiger Woods is now giving lessons on mobile phones.

Woods has launched a mobile application called "Tiger Woods: My Swing" for the iPhone and iPod touch that aims to help golfers of all skill levels improve through video analysis and instruction.

It costs $9.99 and proceeds go to the Tiger Woods Foundation.

Woods is going through his fourth swing change since turning pro in 1996, so it's not clear which swing will be on display. But he says the application is based on how he practices. He says he has used video technology to gauge how his swing is developing.

The application will allow golfers to capture video of their swings to analyze and compare to Woods'. Woods serves as a virtual teacher. The app also includes personalized videos in which Woods answers questions.