I've started a home automation system using the Vera Lite controller from Amazon. It operates Z wave modules-light switches and outlets. I have about 10 of these around the house on lights and a radio and can control via internet web browser or an Android app. There is also a solenoid Zwave module I have on the common output lead of my sprinkler timer. I can control whether the sprinklers go through their cycle or not without disturbing the timer.
The Vera Lite is capable of quite a bit if you're good at programming-lots of automation. Some of it is quite advanced far more than myself. But to simply pair it with the Zwave devices and operate these devices remotely is quite simple. No monthly subscription charges to use their service.
Also I have Honeywell thermostat which can be controlled remotely via the web or app. No subscription charges on that either.