Mac Users: Can't open unidentified developer app
If you try to open an app that is not registered with Apple by an identified developer (in this case you're trying to open a Laughingbird Software product) you get a warning dialog.
This doesn’t necessarily mean that something’s wrong with the app. For example, some apps were written before developer ID registration began. However, the app has not been reviewed, and macOS can’t check whether the app has been modified or broken since it was released.
To install on a Mac...
Once you download, please go to your downloads folder (or click the arrow > Show in Finder" > "open" in your browser).
Then, "right-click" on the app in your downloads folder to install (instead of double-clicking).
This will bypass an annoying error from Apple that'll make you have to reset permissions in your system preferences :)
Then, when you get a message saying "package is from an unidentified developer...", just click on "Open".
You're also welcome to take a look at this file from Apple: