# SkyGuardTWX > Companion tool for SkyGuardTWX UAT ADS-B Transceiver configuration and data display. (iPhone/iPad app by SkyGuardTWX LLC.) - Source: https://appshunter.io/ios/app/skyguardtwx/id583245288 (this page in markdown: same URL + `.md`) - Developer: [SkyGuardTWX LLC](https://appshunter.io/developer/583245431) - Category: Navigation, Utilities - Price: Free - Rating: 5.00/5 from 2 App Store ratings - Age rating: 4+ - Requires: iOS 11.0 · 8 MB - Languages: American English - Released: 2012-12-10 - Data updated: 2026-07-24 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/skyguardtwx/id583245288/reviews.md ## What is SkyGuardTWX? This app is a companion tool for use with the SkyGuardTWX UAT ADS-B Transceiver. It allows wireless configuration of all required setup parameters such as N-Number, Transponder ICAO code, and Flight Plan/Squawk code. The app is capable of manually changing aircraft squawk codes as issued by ATC while in flight if you have the Vision-Pro model of the SkyGuardTWX UAT Transceiver. Version 2.0.7 and greater is capable of displaying realtime squawk code and pressure altitude as acquired from your Mode C Transponder as long as you have a Vision-Pro Plus Model of the SkyGuardTWX UAT Transceiver. ## Key features - Wireless transceiver configuration - N-Number setup - Transponder ICAO code setting - Flight Plan/Squawk code management - Manual squawk code changes (Vision-Pro) - Real-time squawk code display (Vision-Pro Plus) - Pressure altitude display (Vision-Pro Plus) ## Frequently asked questions about SkyGuardTWX ### What is SkyGuardTWX used for? SkyGuardTWX is a companion app for the SkyGuardTWX UAT ADS-B Transceiver. It allows wireless configuration of setup parameters like N-Number, Transponder ICAO code, and Flight Plan/Squawk code. ### Can SkyGuardTWX change squawk codes in flight? Yes, with the Vision-Pro model of the SkyGuardTWX UAT Transceiver, the app can manually change aircraft squawk codes as issued by ATC while in flight. ### Does SkyGuardTWX display real-time flight data? Versions 2.0.7 and greater, with the Vision-Pro Plus model of the SkyGuardTWX UAT Transceiver, can display real-time squawk code and pressure altitude acquired from your Mode C Transponder. ### What devices support SkyGuardTWX? SkyGuardTWX is supported on iPhone, iPad, and iPod devices. It has an age rating of 4+. ### How often is SkyGuardTWX updated? The latest version of SkyGuardTWX is 2.1.0, last updated on January 12, 2022. The app was initially released on December 10, 2012. ### Is SkyGuardTWX free to use? Yes, SkyGuardTWX is available for free. There are no in-app purchases or advertisements associated with this application. ### What is the user sentiment for SkyGuardTWX? Based on the provided data, SkyGuardTWX has a perfect rating of 5.0 stars from 2 ratings, indicating very positive user sentiment. ### Does SkyGuardTWX require an internet connection? The description implies wireless communication with the transceiver, suggesting it operates locally. However, an internet connection may be needed for initial download or potential future updates. ## Version history (last 5 releases) ### 2.1.0 — 2022-01-12 Added Help View Pane ### 2.0.11 — 2022-01-06 Added Liability Disclaimer notice when application first starts up. Corrected location of "North Up" enable button. When not enabled, "Track Up" will be used for traffic list display ### 2.0.9 — 2021-12-29 Recompiled using Xcode 13 and Targeting IOS 11 and higher ### 2.0.7 — 2017-08-04 This app has been updated by Apple to display the Apple Watch app icon. Removed ForeFlight Enable Mode - No longer necessary since ForeFlight now works natively with SkyGuardTWX ADS-B Transceivers. Added new display fields for Pressure Altitude (expressed in Flight Level Format - i.e.: FL011 which are hundredths of feet). In order for Pressure Altitude to be displayed, ADS-B Transceiver must be a Vision-Pro Plus model and must have Rev. 40 or greater firmware. ### 2.0.6 — 2016-05-27 Added new UI button for Vision-Pro Plus ADS-B Transceivers running firmware version 37 and greater that will allow the Transceiver to communicate with the ForeFlight Mobile Flight App. To get further details on how this works, go to WWW.SkyGuardTWX.com and look under the Discussion Forums under the SkyGuardTWX App. Forum and see the post for ForeFlight Mode. Added new UI button for Vision-Pro Plus ADS-B Transceivers running firmware version 37 and greater that will enable/disable the Auto Detection of Squawk Codes circuit contained in the Transceiver. If this button is turned OFF, then no communication with a Mode A/C/S Transponder is allowed which then requires manual entry of Squawk Codes into the ADS-B Transceiver using the SkyGuardTWX App. or and other Flight Apps. that support SkyGuardTWX Transceiver configuration. ## Apps similar to SkyGuardTWX | App | Rating | Price | Category | | --- | --- | --- | --- | | [Chicago Train & Bus (CTA)](https://appshunter.io/ios/app/chicago-train-and-bus-cta/id6752545701) | 4.5 (14) | Free | Navigation | | [iFly EFB](https://appshunter.io/ios/app/ifly-efb/id655202847) | 4.7 (326) | Free | Navigation | | [iFly EFB - LEGACY](https://appshunter.io/ios/app/ifly-efb-legacy/id6480328701) | — | Free | Navigation | --- *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 2026-07-24.*