Only the current version so far — new entries appear as the app ships updates.
Whole Calculator is an education app by Double Struck Capital with 1,000+ downloads (about 4.2K estimated). +2 installs in the last 7 days. Rated 3.9 from 30 ratings. Released Feb 27, 2014. Install growth, rank history, SDKs and ad networks.
From the store listing: “Calculator constrained in the set of natural numbers. Write numbers and words.”