https://packagist.org/packages/signalgridco/signalgrid-php
signalgridco/signalgrid-php - Packagist.org
Official PHP client for the Signalgrid API
phppackagist
https://play.google.com/store/apps/details?id=co.signalgrid.android&sku=signalgrid
Signalgrid - Apps on Google Play
Notification service
on googleappsplay