Honestly, half of the point was to have a native app. It changes the perception of the product, gives it a proper presence on your app dock, works offline, and has the system related features you would expect :)
It also helps piggyback on the App Store for discovery.
Color management is done on the OS level. If you're not happy with the quality of app.. would love to know what's not working for you - and am happy to provide a refund.
It also helps piggyback on the App Store for discovery.