OpManager 4+

You need to run ManageEngine OpManager server to work with this app.
OpManager is complete, end-to-end network monitoring software that offers advanced fault and performance management functionalities across critical IT resources such as routers, WAN links, switches, firewalls, VoIP call paths, physical servers, virtual servers, domain controllers, and other IT infrastructure devices. You are only able to access your machine setup using this app if you're already running OpManager on-premises, and you can use this app to access the machine setup from your Apple device (iPad and iPhone). This app helps data center administrators stay connected to their IT and access it from anywhere, anytime. It offers quick access to the OpManager on-premises tool to view the performance of devices and troubleshoot faults instantly. This app is not stand-alone.

Features
Lists all the devices in your network based on category
Lists alarm and their causes based on the time and severity (Critical, Warning, or Attention)
Lists all the down devices and their corresponding alarms in your network
Search for a particular device in your network and know its detail and status
Perform Ping, Traceroute, and Workflow actions on devices
Perform actions such as Clear Alarm, Acknowledge Alarm, Delete Alarm, and Add Notes on alarms
Push notifications for getting timely notifications on events that are generated in the OpManager server
With the help of Siri Shortcuts, execute actions to show a list of down devices, and filter alarms based on severity, category, time, acknowledged/unacknowledged
A widget on the Today view to have a quick overview of daily alarms
Ping Tools and Address Monitoring Tools
APM Plugin Support
Support for Https
AD authentication
Supports only OpManager versions 12400 and above