Only the current version so far — new entries appear as the app ships updates.
四级重要单词 is an education app by h-study with 1,000+ downloads (about 1.9K estimated). Rated 5.0 from 12 ratings. Released Sep 29, 2016. Install growth, rank history, SDKs and ad networks.
From the store listing: “收录了大学英语四级(CET-4)常考重要单词2000个,软件本身操作简便,灵活,易用性好。
你可以通过测试检验自己的学习成果,对于难记的单词可以反复学习。”