Only the current version so far — new entries appear as the app ships updates.
Calculator is a tools app by Daejeong Kim with 1,000+ downloads (about 3.9K estimated). +3 installs in the last 7 days. Rated 5.0 from 55 ratings. Released Mar 11, 2016. Install growth, rank history, SDKs and ad networks.
From the store listing: “Simple calculator (expression , memory button, scientific)”