AV Assistant for iOS – USCG / USCG Auxiliary

AV Assistant icon - magenta buoy symbol

Current Version

1.0.0 build 27
iOS 11+ required

Download on the App Store icon
Available for iPhone and iPad

Beta Version
1) install the TestFlight app from the Apple App Store if you haven’t already
2) click on this link from your iPhone or iPad: https://testflight.apple.com/join/bz83vMS4
3) read the post below on AV Assistant 2
4) notify me of any unexpected issues (screenshots are great)

Bug Alert 1 – if you didn’t have CGForm set in an earlier version, you can’t set it in and therefore you can’t get the reporting capabilities.

Bug Alert 2 – when you try to preview the report, crashes have been observed on iPads.

If you are affected by either of these, the next version should take care of these.

AV Assistant (AVA) finds all the nearest aids to navigation surrounding your live GPS position or a fixed position and allows you to verify the aid or report a discrepancy. The Light List data comes from weekly XML and LNM updates provided by the United States Coast Guard.

User Manual for AV Assistant (USCG/Auxiliary version, updated 4/11/19)

Operations Manual for AV Assistant (new)

Settings Guide


This is an unlinked page that is not on the menu, so be sure to save a bookmark to this page or use the original link if you wish to return here. Also, please subscribe at the bottom of this page if you want to be notified of updates.

Privacy Notice

AV Assistant requests and retains your unit, ID, address, and contact information.  Your location, check location, and your test location are used to provide you with a localized map and location-based data (aids to navigation) from the U.S. Coast Guard Light List and Local Notice to Mariners.  Your photos are used to document observed discrepancies with aids to navigation. Your voice recordings are saved to assist you in documenting observed discrepancies. This information is compiled into a report that is sent only to the email address(es) you provide. No data is transmitted to the developer other than what Apple provides in crash data reports and app services.


  • An iPhone or iPad running iOS 11 or later is required to run AV Assistant.
  • To use AVA for USCG or USCG Auxiliary aids verification, you must have GPS. iPhones and iPads with WiFi+cellular have GPS. WiFi-only iPads lack the GPS hardware, so you must add this capability through a plug-in or Bluetooth GPS module.
  • If you are buying a device for AVA, the cheapest recommended option is an iPad Standard (10.2″) with 32GB and WiFi for $329, and the Garmin GLO 2 Bluetooth GPS module for $99. The GPS can be placed in a baggie and tie-wrapped to the starboard rail for close passes by an aid.
  • Compatible models
    • iPhone 5S, 6, 6+, 6S, 6S+, SE, 7, 7+, 8, 8+, X
    • iPad Air, Air 2
    • iPad 2017, 2018, 2019
    • iPad Mini 2, 3, 4
    • iPad Pro (9.7″, 10.5″, 12.9″)
  • Incompatible models (WILL NOT WORK)
    • iPhone 4 and earlier
    • iPad 3 and earlier




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