GPS Relay is made and published by SEUNGHA MOON. AppBrain is an independent app data site and isn't affiliated with SEUNGHA MOON. The app name, icon, screenshots and description belong to SEUNGHA MOON and are shown as published on the App Store.
AppBrain's verdict
- Last updated
- November 7, 2026
- Size
- 1.32 MB
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Store listing
By SEUNGHA MOON, from the App StoreDescription by SEUNGHA MOON Written by the developer, not by AppBrain. Click to read.
NO EXTRA HARDWARE
• No hotspot, no cables, no external GPS box.
• Works in airplane mode, as long as Bluetooth stays on.
• Everything stays on your two devices. Nothing goes over the internet.
WORKS WITH YOUR FLIGHT APP
GPS Relay feeds the iPad like a GDL 90 compatible GPS receiver, on the iPad itself:
• ForeFlight — nothing to set up.
• Jeppesen FliteDeck Pro — switch on its GDL90 Compatible Device input (port 4000).
• Other EFBs that accept a GDL 90 device on UDP port 4000.
SET UP IN TWO MINUTES
A step-by-step guide on each device: allow Bluetooth and location, check that both screens show the same 4-letter code, put the iPhone at a window. Done.
SET AND FORGET
• The iPhone keeps relaying with the screen locked; the iPad keeps feeding your EFB in the background.
• Preflight checklist on both devices: what's ready turns green.
• Honest accuracy: your EFB gets the iPhone's real accuracy, so it can hide ownship when GPS is too weak.
• Alerts if the link drops or the iPhone loses GPS (for example when it is away from a window).
• STOP switches GPS, Bluetooth and background activity completely off.
FREE TO START
Your first 2 hours of relay time are free, counted only while your iPad actually receives GPS. After that, unlock GPS Relay once with an in‑app purchase — no subscription. One purchase covers your iPhone and iPad (same Apple ID); the iPad side never needs it.
WHAT YOU NEED
• An iPhone (the GPS source) and an iPad, both with GPS Relay installed.
• Bluetooth on both. Keep the iPhone at a window: the airplane's skin blocks GPS.
IMPORTANT
GPS Relay is for situational awareness only. It is not certified and must not be used as a primary means of navigation. Follow your operator's procedures and regulations for portable electronic devices.
ForeFlight is a trademark of ForeFlight LLC. Jeppesen and FliteDeck are trademarks of Jeppesen / The Boeing Company. GPS Relay is not affiliated with or endorsed by them.
Safety and technology
Found in the app by AppBrain- Price
- Free
- App size
- 1.32 MB
- Content rating
- Everyone
Technologies used by GPS Relay
Releases
Updates seen on the App Store- Version
- 1.0.1
- Launched
- November 2026
No changelog data
Alternatives
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About the app and developer
About GPS Relay
GPS Relay is a navigation app developed by SEUNGHA MOON.
What is the rating of GPS Relay?
GPS Relay has no ratings yet.
Is GPS Relay free?
GPS Relay is free. The app size is 1.32 MB. The latest version available is 1.0.1. The last update was on November 7, 2026.
What are the requirements for GPS Relay?
The app has a content rating of Everyone. The app has been available on the App Store since November 2026.
Developer information for SEUNGHA MOON
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