Good! Wipr was very cheap, so was Wipr 2, if paying a tiny fee every few years for a well-made app that does its job well keeps the developer in business and able to keep maintaining it, then I'm happy to do it.

That said, I'm not actually convinced there will be a Wipr 3, at least not without some significant change to the ecosystem first. Wipr 2 was a complete rewrite of Wipr, there's no reason to expect it will need yet another complete rewrite.