When I think about Flat, I envision a superb dish at an exceptional restaurant. It's like being served the freshest, most meticulously prepared ingredients, artfully presented to captivate the senses.
The simplicity of Flat isn't a result of immaturity; rather, it's the deliberate removal of anything extraneous, leaving behind an unparalleled user experience.
Flat's greatness lies in its focus—it doesn't attempt to be all things to all people. Unlike Trello after it was acquired by Atlassian, Flat serves as the central hub for your work, rather than trying to encompass the work itself.
For a product management solution that even your CEO will use, look no further than Flat, I know from experience.