# 73 by N0AGI — Amateur Radio Callsign Lookup > Amateur radio call sign lookup and management tool with offline capabilities. (iPhone/iPad app by N0AGI LLC.) - Source: https://appshunter.io/ios/app/73-by-n0agi/id6763606602 (this page in markdown: same URL + `.md`) - Developer: [N0AGI LLC](https://appshunter.io/developer/1895395504) - Category: Utilities, Reference - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 16.0 · 4 MB - Languages: American English - Released: 2026-05-05 - Data updated: 2026-07-28 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/73-by-n0agi/id6763606602/reviews.md ## What is 73 by N0AGI? 73 is the fastest way to look up any FCC-licensed amateur radio call sign — right from your pocket. SEARCH & FILTER - Search by call sign or operator name - Filter by license class, status, state, and city - Full FCC record: name, city/state, class, status, dates, previous call signs, FRN - Recent searches remembered for quick re-lookup FAVORITES - Save any call sign to your Favorites list - Stored locally — works offline - Filter, search, and multi-select your saved list CALL SIGN DETAIL - QR code for quick sharing - One-tap share sheet - Direct link to call.n0agi.com record THEMES 14 hand-crafted themes to match your shack: Dark: Midnight, Solar, Matrix, Neon, Gaming, Ocean, Forest, Sandstone, Arctic, Spectrum Light: Daylight, Sand, Sage, Plum PRIVACY FIRST No account. No ads. No tracking. Your data never leaves your device. Powered by the FCC Universal Licensing System. UNLOCK 20-day free trial with full access. One-time $2.99 — no subscription, ever. 73 de N0AGI ## Key features - Search by call sign or operator name - Filter by license class, status, state, city - View full FCC record - Save call signs to Favorites - Offline access to favorites - Customizable themes - QR code sharing ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Unlock 73 by N0AGI | $2.99 | one-time | ## Frequently asked questions about 73 by N0AGI ### Does 73 have ads? No, 73 is ad-free. The developer explicitly states 'No ads. No tracking. Your data never leaves your device.' ### How much does 73 cost? 73 offers a 20-day free trial with full access. After the trial, it is a one-time purchase of $2.99, with no subscription required. ### Can I use 73 offline? Yes, your saved Favorites list in 73 works offline. This allows you to access your important call signs even without an internet connection. ### What information does 73 provide for a call sign? 73 provides the full FCC record, including name, city/state, license class, status, relevant dates, previous call signs, and FRN. ### How often is 73 updated? The latest version, 1.2.2, was released on June 19, 2026. This indicates a recent update, suggesting ongoing development and support. ### Is 73 available on Android? Currently, 73 is only supported on iPhone devices, as indicated by the 'supportedDevices' field. ### What is the age rating for 73? 73 has an age rating of 4+, making it suitable for a wide range of users. ### What makes 73 unique compared to other call sign lookup tools? 73 emphasizes privacy with no account, ads, or tracking. It also offers offline access to favorites and a highly customizable theme selection to personalize the user experience. ## Version history (last 5 releases) ### 1.2.3 — 2026-07-22 Security: trial timer hardened against device-clock rollback. Housekeeping: internal diagnostic improvements. ### 1.2.2 — 2026-06-19 Better Amateur Radio Club support: W1AW, W5PC, K5LRK and other club records now carry a dedicated "C" badge and "Club" pill across search results, favorites, and the detail screen — so clubs are recognizable at a glance instead of blending in with operator results. Plus a small polish fix on the club detail header (one fewer empty pill). ### 1.2.1 — 2026-06-13 - Rate the app right from favorites — iOS will offer the prompt after you save a new callsign. - Trial banner now shows only in the final 3 days. Less clutter mid-trial. ### 1.2.0 — 2026-06-04 73 v1.2 - Updated pricing — $2.99 one-time unlock. Existing purchasers are unaffected by this change. - Various reliability and stability improvements. We read every email — n0agi@n0agi.com ### 1.1.0 — 2026-05-27 73 v1.1 - Updated pricing — $2.99 one-time unlock. Existing purchasers are unaffected by this change. - Various reliability and stability improvements. We read every email — n0agi@n0agi.com ## More apps by N0AGI LLC - [ChipVault](https://appshunter.io/ios/app/chipvault/id6772799276) All apps by N0AGI LLC: https://appshunter.io/developer/1895395504 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-28.*