I like that you can create your own palettes from scratch or use pre-made ones in order to save time when creating new designs for clients/projects etc., which saves me loads of work as well - very easy drag & drop functionality makes things so much easier than having multiple files open up at once (and wasting hours if not days).
The only thing i dislike about this app currently would be how difficult its sometimes getting around certain features such has adding colors into specific areas within an image using masks; however all these issues are being worked out by their team who do listen closely what we have said they need improving upon before implementing any changes themselves :) Really helpful tool especially since there isn't many tools available online specifically designed towards designers working digitally where colours aren’t always consistent across projects due too different monitors / software used e.g psd.