Only the current version so far — new entries appear as the app ships updates.
易爻 is a lifestyle app by Windsails with 100,000+ downloads (about 118K estimated). +26 installs in the last 7 days. Rated 4.7 from 502 ratings. Released May 19, 2011. Install growth, rank history, SDKs and ad networks.
From the store listing: “Professional divination software combining the Plum Blossom Easy Number and the Six-Yao Principle”