ArKnator will make your phone become an Art-Net LED tile but also a traffic visualizer.
The mobile application must be on the same Wi-Fi network than an ArtNet server.
You can use ArKaos GrandVJ or ArKaos MediaMaster as an ArtNet server.
ArtNet is a communication protocol for transmitting the DMX lighting control protocol over Ethernet.
DMX itself is a standard for digital communication networks that are commonly used to control stage lighting, effects, and light dimmers.
Corrected rendering on iPhoneX and iPadPro
With Family Sharing set up, up to six family members can use this app.