rgem.io

A shared light you can touch from anywhere.

Sixteen colored cells. Synchronized in real time. Tap a cell on your phone and watch it change on every other connected screen — instantly.

Try it yourself

  1. 1 Open app.rgem.io on this device
  2. 2 Open it again in a second browser window — or on your phone
  3. 3 Enter the same Gem ID (e.g. default) in both, and hit Connect
  4. 4 Tap any cell. Watch the other window.
Try the demo