バス時刻表 is a maps & navigation app by 勝@工作室 with 100,000+ downloads (about 129K estimated). +12 installs in the last 7 days. Released Jan 7, 2012. Install growth, rank history, SDKs and ad networks.
From the store listing: “If you download the timetable data for the bus stops you need to your smartphone in advance, you can use it offline.”