Which will be the lowest supported iOS version?

Edit: Please correct me if I’m wrong here’s a trend in iOS app development where all new apps have arbitrarily high iOS requirements when they could run on older iOS versions just fine. I would love to use Voyager but if it goes down the same route, I won’t be able to :(

I know about the PWA but it can stop working for me over time when the old release of WebKit on my phone eventually becomes incompatible with it