I have developed a new WiFi enabled Two wheeled bot named Tubby Bot. It has a ESP8266 microcontroller based board and it is controlled using Blynk App. .
Here is the link: http://codelectron.com/tubby-bot-a-wifismartphone-controlled-two-wheeled-bot-step-by-step-guide/
As someone who worked in Blynk Arduino part in the early pre kickstarter days I feel very happy to see it now.