Is ReachView actually still open source? Its github repository is stuck 2 years ago. Have you moved to closed source? What about the mobile apps (Android, iOS) - they are closed too, right?
Btw. what about ReachImage itself? Is it open for custom development still?
There is a post from me, that explains how to compile it from source.
Emlid refused a PR where I added that information to the documentation.
So … just search for “compile reachview from source” and you will find it.
The back-end RTKLIB software is open source, but current-version ReachView is not. I assume that includes the mobile apps as well. I doubt you could run the old open source version without serious modifications. Know that the receiver firmware has been upgraded since that time as well.