I have Zabbix + Grafana system. The order includes the configuration of email notifications, SMS notifications and integration with an application for iOS and Android phones.
Notifications should be triggered at the moment, set situations, e.g.: when the *zabbix" monitoring system detects client CPU usage at 80%, etc.
The app on the phone should display basic information (it doesn't have to be all of it) that can be found in a standard panel via the web. I assume it will be any of the apps already available on google play and app store.
At this stage of implementation I care about simplicity and not exorbitant price. Details are up for discussion. Further cooperation is possible.