Only the current version so far — new entries appear as the app ships updates.
Metal Detector is a tools app by Tejtron LLC with 5,000+ downloads (about 7.3K estimated). Rated 5.0 from 48 ratings. Released Sep 28, 2014. Install growth, rank history, SDKs and ad networks.
From the store listing: “It detects magnetic field (including emf) using phone's sensor.”