From what I can find, the original Wipr was released for iOS in Sep 2015 and the macOS version followed in Aug 2018.

Wipr 2 is a complete rewrite and was released in Nov 2024. So, in theory, for £1.99 you could've gotten 9 years of ad-blocking on iOS and for another £1.99 the same on macOS for 6 years.

And since this requires maintenance of the blocklists and associated code, I am totally fine with paying a small amount once every few years. And I'm not even forced to pay as the older versions usually continue to run - albeit on life support.

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.

Why would you need to upgrade to wipr 3 if wipr 2 does what you want and need?