Only the current version so far — new entries appear as the app ships updates.
小児科医推奨!予防接種スケジューラー赤ちゃん・子育て母子向け is a parenting app by 特定非営利活動法人 VPDを知って、子どもを守ろうの会 with 500,000+ downloads (about 643K estimated). +164 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.
From the store listing: “★ Over 1.4 million downloads ★
The definitive vaccination app recommended by pediatricians
Also supports brothers and sisters! Don't forget the vaccinations for several years!
The latest information on vaccines is also posted!”