This is the iOS app front end for the https://github.com/rankchoice/rankchoice back-end project, as presented at 2019 Developer Camp.
Like any product of a hackathon, the code is not production ready. For instance there is liberal use of the swift ! which I normally eschew.
So consider it a proof of concept. A single link among a much more complicated chain.
This is open-source — oh yeah, we got the award for best open-source project — MIT style.