J-WAVEアプリ is a music & audio app by J-WAVE 81.3FM with 50,000+ downloads (about 73K estimated). +137 installs in the last 7 days. Released Mar 27, 2014. Install growth, rank history, SDKs and ad networks.
From the store listing: “Official app of Tokyo radio station J-WAVE 81.3FM. Full of useful contents such as real-time display of on-air music and program information and event information!”