I have some outdoor festoon/string lights plugged into a basic smart plug in an outhouse and I’m able to connect to the smart plug with my phone and turn the lights on and off. However I’d like a switch inside to control it too.

What are my options here? I’d like to avoid a hub if possible because I don’t see myself having other uses for it. I found some that have a plug and a wall switch that connects to it wirelessly but none that can also be controlled via an app.

Thanks