There are special LED light bulbs you can purchase that you can control through an app. Not only can you control the brightness but you can control the color. These light bulbs are a lot more spendy.
LIFX makes one you purchase for $39.99 each. They are the equivalent to a 60W bulb. With the app you can schedule the times they are on, change the color or brightness, or create your lighting schemes. They integrate with Nest, Amazon Echo and few other smart home devices. This brand started as a Kickstarter project.
Another one is by ilumi. It is a Bluetooth enabled bulb that can be controlled through an app as well. Wi-fi is not required for the bulb itself. This bulb will set you back $59.99. You can choose settings like Daylight, Sunlight, Natural White, Early Morning, Sunrise, Warm White. Change colors and brightness as well. This bulb got its start when the developers won first place that came with $5,000 prize in the annual Business Idea Competition at the University of Texas in Dallas in 2010. The prize money helped fund their company. In 2013 they used Indiegogo and Kickstarter and raised $200,000. In 2014, they went on Shark Tank and their company was further helped by Mark Cuban.