Only the current version so far — new entries appear as the app ships updates.
行列輸入法 -- 字根提示版 is a tools app by chien.tsungmin with 1,000+ downloads (about 3.5K estimated). +4 installs in the last 7 days. Released Nov 13, 2017. Install growth, rank history, SDKs and ad networks.
From the store listing: “Provide root tips function Input Method”