73 live
iPhone app + Android app — amateur radio call sign lookup, favorites & filters, in your pocket. Now live on both stores.
Native iOS + Android companion to the callsign webapp — same FCC ULS data layer, surfaced through a native search-and-favorites experience built for the field. Full FCC record, DMR IDs via RadioID.net, QR-share, 10 hand-crafted themes. Android v0.1.1 ships feature parity with iOS v1.2.1 and is available on U.S. Google Play. Whether you're at a contest, a club meeting, or just curious about a call sign you heard on the air, 73 gives you the full record in seconds — on whichever phone you carry.