Not officially, but some users have had success running our Android app in various emulators on desktops, and newish Chromebooks support running Android apps officially through the Play Store so if you consider those to be 'desktops' that would be a desktop version.
Also, we are hoping to launch a macOS app later this year when Apple releases a macOS update with their new "Project Marzipan" allowing iPad apps to be easily recompiled to work on Mac.