Only the current version so far — new entries appear as the app ships updates.
發票小幫手,發票,統一發票,統一發票小幫手,統一發票兌獎 is a tools app by Play Zhang with 10,000+ downloads (about 47K estimated). +36 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.
From the store listing: “Provide a unified helper for invoices, which is convenient for the public to redeem prizes and remind users whether they have won.”