Absolute garbage!
After reading the reviews, I didnt expect much and although it was was to use, the results are very disappointing. The preview image appears fine and ONLY exports a blank white square to he Camera Roll. Obviously the developer does not know how to design/develop for iOS. Stay away from this app. Do a little research and find another app to fill your slow shutter needs.
Dullmedia about
Slow Shutter Camera FREE, v1.3