Only the current version so far — new entries appear as the app ships updates.
Countdown solver!+ is a tools app by Ilham Djumatov with 10,000+ downloads (about 26K estimated). Rated 4.1 from 237 ratings. Released Jan 3, 2017. Install growth, rank history, SDKs and ad networks.
From the store listing: “Solves countdown Numbers rounds in a breeze!”