The advertisement display specifications have changed.
Only the current version so far — new entries appear as the app ships updates.
FT-X Remote is a tools app by SoftStandK with 100+ downloads (about 356 estimated). Released Aug 19, 2020. Install growth, rank history, SDKs and ad networks.
From the store listing: “FT-757SXII / FT-757GXII / FT-840 / FT-850(FT-890) / FT-900 Remote controller”