Help with the phone app.

• Email gt7-datalogger-sync-admins@googlegroups.com for anything: a question, a problem, or something about your data.
• GitHub issues at github.com/jbhoorasingh/gt7-datalogger/issues for bugs and ideas. Issues are public, so never paste a sync connection string or token into one.

It helps to say which iPhone or iPad you have, whether you connect to a datalogger or straight to the PlayStation, and what the app shows when it goes wrong. I build the app on my own, as a hobby, so a reply can take a few days.

Tap Get started, then Try a demo on the “Where does telemetry come from?” screen. The demo plays laps recorded from the datalogger’s simulator, so you can try the live dash, Analysis and the Race Engineer without a console or a datalogger. It needs no network at all.

The demo’s laps are kept apart from your own and deleted when you leave. To leave, go to More → Connection → Exit demo.

First, for either source

• Same Wi-Fi. The phone and the PlayStation or datalogger need to be on the same network. Mobile data won’t do, and nor will most guest networks, or a router with “client isolation” or “AP isolation” on, because those keep devices from seeing each other.
• Local network permission. The first time the app looks for anything, iOS asks whether it may find devices on your local network. If you tapped Don’t Allow, it sees nothing on your Wi-Fi. Turn it back on in the iPhone’s Settings → Privacy & Security → Local Network → GT7 Datalogger.

Your datalogger

• Scan its QR code. In the datalogger, open Settings → Phone app. It shows a QR code holding its address. In the app, tap the QR button beside the address box and point the camera at it.
• Or type the address. The computer’s IP address on your network, such as 192.168.1.20. Leave the port out if it’s the usual 8000.
• Check it from Safari. Open the same address in Safari on the phone. If the datalogger’s page doesn’t load there, the app can’t reach it either: check it’s running, and that the computer’s firewall lets other devices in on its port.

Your PlayStation

• Start Gran Turismo 7. GT7 only sends telemetry after it receives a small “heartbeat” message, and only while the game is open. The app sends that heartbeat every couple of seconds. “Waiting for GT7” means the heartbeats are going out and nothing has come back yet.
• Type the console’s IP address if the phone can’t find it. On a PS5 it’s under Settings → Network → Connection Status → View Connection Status; on a PS4, Settings → Network → View Connection Status.
• Keep the app on screen. On iPhone and iPad, capture pauses while the app is in the background, and picks up again when you come back to it.

The app has no accounts, no ads and no analytics, and what it records stays on your phone and your own network unless you turn sync on. The app’s privacy page has the details.