4th review... Updated. Now works again! Does a great job enhancing. No other app matches output. Only problem is manual control sliders are slow and difficult to use. You must wait for slow slider to respond. And a suggestion.... allow user to save their adjustments so they can easily apply to other photos. Thanks for updating! 3rd review... Its been over two years since an update. What was once a great app is now a mediocre non-working frustrating app. Desperately needs an update. 2nd update... IOS8.3 has killed the apps ability to fine tune and adjust. I dropped a star until developer updates. 1st review... If you want to find the detail in a photos highlights and shadows, this is the app for you. Quick, easy, and effective! If developer would update and get rid of a couple minor bugs I would give a full five stars.