Only the current version so far — new entries appear as the app ships updates.
漢字クイズ・慣用句クイズ - 間違えると恥ずかしい日本語 is an education app by Flipout LLC with 50,000+ downloads (about 73K estimated). +33 installs in the last 7 days. Released Jan 16, 2018. Install growth, rank history, SDKs and ad networks.
From the store listing: “Have you misunderstood the meaning and usage of idioms, or how to read kanji?
A lot of problems that are easy to make mistakes are recorded. Learn correct Japanese with this app!”