GPS Relay — Support

GPS Relay sends your iPhone's GPS position to your iPad over Bluetooth, so a Wi‑Fi‑only iPad can show your position in ForeFlight, Jeppesen FliteDeck Pro, or any flight app that accepts a GDL 90 GPS device. No hotspot, no cables, no extra box.

Set up

Install GPS Relay on your iPhone and on your iPad.
Open it on each device and follow the setup guide (about two minutes).
Check that the iPad shows the same 4-letter code as the iPhone.
Put the iPhone at a window, lock it, and switch the iPad to your flight app.

FAQ

What do I need?
An iPhone (the GPS source) and an iPad, both with GPS Relay installed and Bluetooth on. The iPhone does not need a SIM or a data connection.

Does it work in airplane mode?
Yes. Airplane mode is optional — GPS Relay only needs Bluetooth. If airplane mode switches Bluetooth off, turn it back on in Control Center (iOS remembers that next time).

Where should the iPhone be?
Right at a window, where it can see the sky. The airplane's skin blocks GPS: in our flight tests the iPhone had a usable position 96% of the time at a window, and almost never in cruise away from one. If GPS is weak or lost, both screens tell you and the iPad sends you a notification.

How do I set up ForeFlight?
Nothing to set up. Keep ForeFlight on screen; under More › Devices it lists GPS Relay as connected while GPS is coming in.

How do I set up Jeppesen FliteDeck Pro?
In the iPad Settings app: Apps › FD Pro › AID/ADS-B Provider › GDL90 Compatible Device, Enable ON, Network Port 4000. In FD Pro, tap the GPS (satellite) icon: Source shows GDL90 Compatible.

Other flight apps?
Add a GDL 90 device on UDP port 4000 in your app. GPS Relay feeds it on the iPad itself (127.0.0.1); nothing goes over a network.

The codes don't match.
On the iPad, open CODE CHECK and tap Pair with your iPhone's code, or use Details & help › Forget this iPhone.

How does the free trial work?
The first 2 hours of relay time are free, counted only while your iPad actually receives GPS. After that, unlock GPS Relay once on the iPhone — no subscription. The iPad side is always free. On a new iPhone use Details & help › Purchase › Restore Purchase. A flight that is already running is never cut off.

Battery?
Plan for roughly 10% per hour on the iPhone. A charger is a good idea on long flights; both devices warn you when the battery runs low.

Can I navigate with it?
No. 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 for portable electronic devices.

Contact

Bug reports and feedback: drcmoon95@gmail.com
If something did not work in flight, please attach the flight log (Details & help › Flight log › Share).