Springy is deprecated
All good things come to an end. Springy has not been in active development for quite some time. As of recently, it is also no longer officially supported. There will be no new versions released and there is no any technical or other support available.
Springy still does its things pretty decently, so it can still be very useful. If you find it so, you can download and use the latest version 1.6.1. It’s a demo with some limited functionality. However, you can remove all limitations if you license your copy with the provided free license card.