Only the current version so far — new entries appear as the app ships updates.
PipeCircle - バトンを繋ぐリレーSNS is a social app by Oneforge,LLC with 100+ downloads (about 400 estimated). Install growth, rank history, SDKs and ad networks.
From the store listing: “A relay SNS where you pass the baton to friends and followers on a single theme. Just adding a short message starts a story that wouldn't be possible on your own. It's a step beyond a "like," and more casual than a conversation.”
