Only the current version so far — new entries appear as the app ships updates.
Backpropagation is an education app by honzour with 10,000+ downloads (about 28K estimated). +1 installs in the last 7 days. Rated 4.2 from 146 ratings. Released Jun 18, 2014. Install growth, rank history, SDKs and ad networks.
From the store listing: “A simple example of backpropagation algorithm.”