I bought widget candy long time ago. Let me say %95 percentage of what they advertise in their website is working. Unfortunately as @hgy26 mentioned there is zero support more than 1 year. If default advertised functions will satisfy yor needs you can give it a try, but don't expect any help from the developer. Although it is source code is not hidden or encrypted i personally fond it so much confusing to alter it. In addition Gideros implementation is so much strict, you can have problems while using it with default Gideros api and features like scenemanager or stage.
Edit:LAst time i received email from them is 11.05.2014
Actively developed and seems more tidy. In addition you can combine your own code so much easily if needed.
Need to think which UI elements you need in your desired application and act according to it. Widget candy in its current state seems like a chaotic powerful tool. You can end up having zero to 100 percentage success with it:D