IO 2016 Watch Face is a free lifestyle app for Android Wear smartwatches, developed by Gregory K. It is a fun and animated watch face inspired by the countdown on the Google I/O 2016 website. The app requires an Android Wear smartwatch, and it is useless without one.

The watch face has a black background, with a colorful animation that displays the time in a unique way. It features an animated circle that fills up as the day progresses, displaying the remaining time until the end of the day. The design is simple, yet eye-catching, and it is perfect for those who want a fun and interactive way to keep track of time.

Overall, IO 2016 Watch Face is a great addition to any Android Wear smartwatch. It is easy to use, fun to look at, and it adds a unique touch to the user's watch face. However, keep in mind that it is only compatible with Android Wear smartwatches, and it does not offer any additional features beyond its fun design.