A free app for Android, by Yeonnam Play.

Do you want to show your support for your favorite idol at concerts? This app can help you with that. 

The Cheering- LED Banner app is an application for Android devices that allows you to make your favorite idol’s cheering banner. With this, you can create handy banners that are sure to get noticed in any concert setting. It has a simple design and is easy to use, so even if you have never made a banner before, you can easily create a beautiful one with it.

The app has an Idol Design Template feature which allows you to create customized banners that reflect your idol’s color and style. You can also save the designs you make so that you can use them again.