For image editing and enhancements (I havent used the collage functionality yet): It has some really great functions to improve the look of photos. But using it is quite difficult. Eg. the sliders dont’ have an undo. So to compare different settings (eg Exposure), you have to manually drag the slider back to 0 or some other number to see the look. This really makes my workflow difficult. In fact, there’s no Undo for anything! It also saves as a very small size JPEG and doesnt give you any options about size/quality. Major problem. Some buttons are mysterious. Eg the compare button. What does it do??? So much potential for this app. But it needs improved ease of use.