Ping command with parameters from iPhone How I can execute ping command with parameter -s (size of package) from iPhone device. I need it for access to my router with help of knocking mechanism. 

I tried different apps in AppStore - no success.
Apps List: 

Ping - network utility

Termius - SSH client

Maybe, someone know appropriate one?
IT Tools - Network Analyzer iOS app has a configuration screen for ping, which includes Payload Size: