Run WebOS on your Mac with VirtualBox.

Download the WebOS SDK here:
https://cdn.downloads.palm.com/sdkdownloads/3.0.2.652/sdkBinaries/Palm_webOS_SDK.3.0.2.652.dmg


Once you download the emulator will pop up in you Applications when you run!



Read about it here:
https://developer.palm.com/content/resources/develop/sdk_pdk_download.html#c23352



Save your $99!!