73 by N0AGI
Amateur Radio Callsign Lookup
About
Quickly look up FCC-licensed amateur radio call signs with comprehensive details. Save favorites for offline access and customize your experience with various themes. Your data remains private with no ads or tracking.
What's New in 73 by N0AGI
1.2.3
July 22, 2026
Security: trial timer hardened against device-clock rollback. Housekeeping: internal diagnostic improvements.
In-App Purchases
$2.99
Unlock 73 by N0AGI
Unlimited lookups, favs, and themes. One-time purchase.
Developer apps
FAQ
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.