Two Wi-Fi dimmers at 120V, one controlled by app or touch and one by app or physical switch. Both retrofit into a standard device box with no new wiring.
The physical control matters more than the app in practice. A smart dimmer that cannot be worked from the wall fails the moment a guest or a network outage is involved, so both units retain a working manual control.
This is the upgrade step from the standard dimmers, and it pairs with smart switches for a buyer building out a connected range. Finish with the matching wall plates.