Only the current version so far — new entries appear as the app ships updates.
乗り物なあに? - タッチ図鑑シリーズ is an education app by Pixel Inc. with 1,000+ downloads (about 4.8K estimated). +15 installs in the last 7 days. Released Sep 5, 2015. Install growth, rank history, SDKs and ad networks.
From the store listing: “Lots of rides for kids! Comes with English and Japanese audio that is easy to remember!”