Simon 5 is coming soon!
Simon version 5 is currently in beta testing. It is a massive update, introducing a much-requested feature: syncing the Simon data between multiple Macs, plus a Simon Status service, a Link Checker filter, improved Find filter, iMessage and Speak Error notifiers, a new app icon, and much more.
Important: please note that Simon 5 requires a minimum of macOS 10.12 (Sierra), and will be a paid upgrade from Simon 4 after the beta. Purchasers since September 1, 2020 automatically get a version 5 license (that also works in previous versions).
Re: Notifications via Phone Call
That's a tricky one. I'm not aware of any way to achieve this, though maybe Skype or some other tool might be scriptable. If one works with AppleScript, you may be able to write a script to tell it to dial a number.
Anyone else have any knowledge of this area?