VWO - Use VWO to tweak, optimize & personalize your website with minimal IT help.
Snapseed - Snapseed is a photo enhancement and sharing app with a powerful suite of imaging filters and tools...
Optimizely - A/B testing you'll actually use.
Hipstamatic - Hipstamatic is a world-class photography app and Apple’s original App of the Year.
Crazy Egg - Through Crazy Egg's heat map and scroll map reports you can get an understanding of how your visitors engage with your website so you can boost your conversion rates.
Paper Camera - Paper Camera is the BEST Sketch/Cartoon app in the App Store.