Free · No app store needed

Get GCR Sentinel on your phone

Open the App Works instantly — no download needed

One tap away

Tap “Open the App” above first

The app opens instantly in your browser. A moment after it loads, a green bar appears at the bottom showing you exactly how to add the icon to your home screen — just follow it right there. Doing it inside the app is what pins the real thing, so it opens with one tap every time.

On a computer? Point your phone camera at this code to open the app on your phone.

Or just open the web app here →