Nowadays, when VPN applications are becoming more and more popular, a tool to monitor their activity can be very useful. This is why, Betamagic developed Net Radar, a mac utility that is capable of detecting when your VPN is not providing you a secure connection.
The user interface looks quite standard, having a main menu, with a few tabs, and some configuration options. It's built to provide fast response to user actions rather than visual attractiveness.
Its functionalities are centered around detecting when a VPN service stops to hide the real IP address of your location. Additionally, other features come to fill other gaps, such as the option to view the external IP address,city or the country name.
Moreover, users can set the app to automatically launch at startup, view the status of their VPN connection, or use the Assistant for better configuration.
The app has been tested with OpenVPN, PPTP, IPSec, WireGuard and IKEv2.
To summarize, Net Radar is a useful utility for discovering flaws of a VPN connection. However, it does require a subscription and it doesn't have an option to customize the menu bar display.