Smartlights Countdown is a free Android app developed by Gemmy Industries. It is a two-in-one app that controls both the "Countdown to Christmas projector" and the "Countdown to Christmas and More projector". The app offers Bluetooth connectivity, projector password function, read time in phone, and calculate the distance of Christmas function.

For the "Countdown to Christmas and More projector" feature, users can not only countdown to Christmas but also set a specific date and title for it. The app is compatible with Android 9.0 and is perfect for those who want to add a little extra festive touch to their holiday season.

The app also includes a contact information page with Gemmy Industries in case technical guidance is needed. Overall, Smartlights Countdown is a user-friendly app that offers a convenient way to control Christmas projectors and enhance the holiday experience.