If you just use a single commercial VPN (like NordVPN or ExpressVPN), Shimo might be overkill, as those services provide their own streamlined apps.
One of its "killer features" is the ability to automate connections based on your environment. For example, you can set it to connect automatically whenever you join an unsecured Wi-Fi network. Shimo 5.0.4
It lives in your menu bar for quick toggling, keeping your desktop clutter-free while providing "at-a-glance" connection status. Is it right for you? If you just use a single commercial VPN