[[xref:http://www.pcworld.com/article/256161/top_15_iphone_apps_of_2012_so_far.html#tk.hp_new|By Daniel Ionescu, PC World]]
SloPro lets you shoot slow-motion video with your iPhone 4S, without the need of expensive equipment. The app takes 60fps slow-motion video in 720p HD, basically doubling the frame rate on the 4S. You capture the footage as normally with the app and then the built-in editor allows you to select in an out points where the video will be slowed down. The results are smooth videos with no choppiness, and for a $1.99 in-app update you can remove the watermark and export results to the camera roll or iTunes.
[[xref:http://api.viglink.com/api/click?format=go&key=2b0adaafa9ad8a29fede7758fada1730&loc=http%3A%2F%2Fwww.pcworld.com%2Farticle%2F256161%2Ftop_15_iphone_apps_of_2012_so_far.html%23tk.hp_new&v=1&libid=1337919548376&out=http%3A%2F%2Fitunes.apple.com%2Fapp%2Fslopro%2Fid507232505%3Fmt%3D8&ref=http%3A%2F%2Fwww.pcworld.com%2F&title=Top%2015%20iPhone%20Apps%20of%202012%2C%20So%20Far%20%7C%20PCWorld&txt=Get%20this%20app&jsonp=vglnk_jsonp_13379207490467|Get this app]] (Free)