Only the current version so far — new entries appear as the app ships updates.
Proper Fractions is an education app by nummolt with 1,000+ downloads (about 3.1K estimated). +2 installs in the last 7 days. Released Jun 25, 2016. Install growth, rank history, SDKs and ad networks.
From the store listing: “Equivalent fractions: circle-square Math tool. Fraction Sense. Unit fractions.”