As any photography hobbyist knows, slowing the shutter speed can produce some interesting effects. The technique is also useful in low light situations, to capture more light. The iOS app Slow Shutter! simulates this on the iPhone, iPad and iPod touch with a simple interface. Apple is running a promotion until March 28, offering free downloads of the app.
Normally, Slow Shutter! runs $1.99 on the App Store. In order to get a free copy, iOS users must redeem a gift code through the Apple Store app. The Apple Store app is free, and provides access to Apple products and mobile shopping directly on iOS devices. Once installed, follow these steps to take advantage of the promotion and download Slow Shutter! for free: