Please review the announcement below regarding the status of Esri's Geotrigger Service.
https://developers.arcgis.com/geotrigger-service/
This application requires a browser with CORS support. If you want to use the editor, you can either view this site with a newer browser or host the application yourself using a proxy.
The Geotrigger Editor is a visual editor for ArcGIS Geotrigger Service applications. Using only your Client ID and Secret (acquired from developers.arcgis.com) you too can visually edit your Geotrigger Service applications!