Luna Display is described as 'Transforms a tablet or computer into a wireless, low-latency second display for Mac or PC, supporting USB-C/HDMI, Apple Pencil, external keyboards, and touch input' and is an app in the os & utilities category. There are more than 10 alternatives to Luna Display for a variety of platforms, including iPad, Mac, iPhone, Android and Windows apps. The best Luna Display alternative is Side Screen, which is both free and Open Source. Other great apps like Luna Display are Tab Display, Duet Display, superDisplay and Orion HDMI Monitor.