Only the current version so far — new entries appear as the app ships updates.
knew - 紹介型マッチングアプリ is a dating app by Livesense Inc. with 10,000+ downloads (about 29K estimated). +2 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.
From the store listing: “We will introduce you to people who are compatible with your profile. For those who are seriously looking for a future partner! A serious introduction-type matching app!”