No, neither Acrobits Softphone nor Groundwire is available as a native desktop application for Windows or macOS . They are only on Android and iOS.
Acrobits Softphone and Groundwire are only designed for mobile platforms, available on iOS and Android.
Tips
If you are looking for a softphone in desktop versions, check out our Cloud Softphone business solution at acrobits.net/cloud-softphone.
You may watch the short videos at faq.acrobits.net/cloud-softphone-unified-communication for the feature introductions.