Yes Shelly has a very nice App that you can use. But you can also use any one of Smart Home Hubs to add more complex functionality with other smart home products. Homeseer happens to be my Home Automation platform of choice. The advantage with a HA Platform is that it doesnt care what the technology or brands are. It can make them all interact with one another based on your own rules set.
To expand on this - my internal lighting modules are all fibaro running on ZWave; my garden lights all use shelly running on wifi; my internal standard lamps are all Philips Hue (Zigbee); my cinema room GU10s are Philips Hue (Zigbee); my under counter lights are Fibaro RGBW (Zwave). I have various Phiips Hue (Zigbee) switches that operate both Zigbee and Zwave lights. Some of my lights are on timers (controlled by Homeseer) and some of them will react to various inputs from other systems. So if my Ajax a alarm goes off and its after sunset, all of my smart lighting in my house will all come on 100%. If I say to Alexa 'Emergency' all of my Lights come on 100%. Some of my lighting will automatically switch off or dim at midnight, unless I say to Alexa 'Goodnight' then she turns off all of my downstairs lighting, except for my hallway Philips lights, which dim to 20% until Dawn, then turn off. If I say Alexa 'Party Mode' she over-rides all of my indoor and outdoor timers for 24 hours to stop certain lights going off at midnight. This why I run a Home Automation hub, because it allows me to create complex rules, controlling different technologies seamlessly. It is really the next step for many home automators.
There are other platforms out there such as Homey, HASS, Homecentre, Hubitat, SmartThings, Mi Casa Verde (Vera), to name but a few. Starting from free to use to hundreds of pounds.
So how much would a HA hub cost that will allow me to do what you've done?