Coral brings wide color to your editor and allows you to edit and manage pictures using the full true tone color space on your iPhone.
Pictures taken with an iPhone 7 share the same color space as the new wide color display does.

Only missing link to view these pictures is an editor that can handle wide color gamut. Fortunately you have now the Coral app available, which allows you to edit pictures taken with your iPhone 7 while keeping all colors as they should be.
Unlike other apps Coral does not change the incredible liveliness that comes with Wide Color Gamut.

Stop looking further to take full advantage of the new iPhones camera when editing pictures and to be sure that nothing is lost during editing!