Only the current version so far — new entries appear as the app ships updates.
포세이돈 키우기 쿠폰 is a tools app by HYUN WOO PARK with 10,000+ downloads (about 11K estimated). +9 installs in the last 7 days. Released May 9, 2022. Install growth, rank history, SDKs and ad networks.
From the store listing: “Show coupon information of "Raising Poseidon" and receive a push notification when a new coupon is issued.”