Only the current version so far — new entries appear as the app ships updates.
Pinyin Simplified MessagEase is a tools app by Exideas with 1,000+ downloads (about 3.2K estimated). +1 installs in the last 7 days. Released Mar 29, 2013. Install growth, rank history, SDKs and ad networks.
From the store listing: “Pinyin Simplified translation module for MessagEase Keyboard.”