Only the current version so far — new entries appear as the app ships updates.
わかやまペイ is a shopping app by 株式会社まちのわ with 10,000+ downloads (about 22K estimated). +10 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.
From the store listing: “Wakayama Pay is an app that allows you to easily apply for, purchase, and use electronic gift certificates using just your smartphone.”