9 of the Fibaro dimmer modules installed behind the existing face-plate would do the job. The problem would be space and possibly cost.
If you are just switching and not dimming certain sets of lights, then a 2 load module would save space and cost.
You could also consider installing the modules somewhere other than directly behind the light switch.
Sorry, can't help with the app question but I'd be interested if yu find any information on this solution as I've been thinking of how to put 7" tablets everywhere around the house. Firstly to aid with home automation but secondly just to wind my wife up. lol
Frank