If you've ever wondered how Gran Turismo 7 telemetry tools exist at all — how any software can see your throttle trace, your brake pressure, your tyre temperatures in real time — the answer starts with a forum thread, a motion rig company, and one very curious developer.
The Discovery: A Secret Source
In 2022, sim racing enthusiasts on GTPlanet noticed something unusual: a Japanese motion simulator company was advertising Gran Turismo 7 compatibility. That meant GT7 was broadcasting real-time game data over the local network — data nobody from Polyphony Digital had publicly announced.
The thread "GT7 is compatible with motion rig?" became one of the most consequential discussions in GT7 community history. [1]
A developer known as Nenkai reverse-engineered the private UDP protocol and documented what GT7 was broadcasting: speed, RPM, throttle, brake, gear, G-forces, tyre temperatures, suspension travel, and more. He published it as free, open-source software under the MIT License. [2]
GTPlanet covered it directly: "Through additional research, this same interface was found to contain a wide range of real-time data, including everything from tire 'temperatures', to engine RPMs, and positional information." [3]
The floodgates were open.
The Builders: An Open Source Community
Within months, developers worldwide had built a remarkable range of tools — all free, most open source [4]:
- gt7dashboard (snimat) — Python app for throttle, braking, time delta, fuel analysis, race lines
- gt7telemetry (bornhall) — Python terminal logger for all telemetry values
- EzioDash (bornhall) — iOS live telemetry dashboard
- InvoGT (BluesJiang) — Desktop telemetry visualization
- sim-to-motec (GeekyDeaks) — Log generator for MoTeC i2, the professional motorsport analysis tool used in real racing
- GT7tracks (vthinsel) — AI model for identifying track names from positional data
These weren't corporate products. They were passion projects built by drivers and engineers who shared their work freely. That community deserves enormous credit. Everything that followed — including Tractivvity — exists because of what they built.
The Gap: Power for the Few
The tools that came out of this community cover real ground. gt7dashboard gives you live telemetry in a browser. EzioDash puts it on your iPhone. sim-to-motec exports to the same analysis software professional teams use. Each one solves a real problem for a real kind of driver.
But each one also asks something of you. gt7dashboard wants a Python environment and a working knowledge of the terminal. MoTeC i2 is a professional tool with a professional learning curve — channels, math channels, workbooks, outings. Even the lighter-weight options assume you know what to do with a throttle trace once you're staring at one.
That's not a criticism. These tools were built by drivers, for drivers like them. The complexity isn't accidental — it's what unlocks the depth. The trade-off is real, though: the more a tool can show you, the more it expects you to bring.
Most GT7 drivers don't want to bring anything. They want to know: where am I losing time?
That was the gap.
Tractivvity: A Unified Perspective
Tractivvity didn't invent GT7 telemetry. We didn't discover the source, write the first parser, or build the first dashboard. Every one of those breakthroughs belongs to someone else.
What we asked was a different question:
What would this look like if any GT7 driver could be up and running in five minutes — and access their data from any phone, tablet, or computer?
So we built that. A lightweight agent for iOS, Android, Mac, or PC that captures the telemetry stream — install it, point it at your PS5, you're done. From there: 15 data channels with 70 data elements you can drill into to find your W. Lap comparisons on a shared timeline so you can see exactly where time goes. Global and group leaderboards. Weekly challenges. A driver profile that tracks your consistency and personal bests over time. Free to join.
GT7 already streams the data. The community already cracked the protocol. We just built the front door.
A Note of Genuine Respect
If you use gt7dashboard, EzioDash, sim-to-motec, or any of the tools the community has built — keep using them. They're excellent. They were built by drivers who cared enough to crack open the protocol, learn the packet structure, and ship something for their community without asking for anything in return. That's rare. That's worth protecting.
Our goal isn't to replace those tools. It's to open the door for the driver who's never used any of them — and to make sure the work those developers did keeps reaching new people. Every Tractivvity user is a person who learned that GT7 telemetry exists. Some of them will keep going. They'll find Nenkai's repo. They'll install gt7dashboard. They'll discover MoTeC. That's a good outcome — for them and for the tools they'll eventually use.
Because the truth is, GT7 telemetry has always been there. Every player on every PS5 has been broadcasting their data the whole time, whether they knew it or not. The community above figured out how to listen. We figured out how to translate. The driver is the point. Always was.
If you've never seen your own data before, you're about to. Welcome.
Find your W.
Citations:
[1] GTPlanet: "GT7 is compatible with motion rig?" — gtplanet.net
[2] Nenkai's PDTools/SimulatorInterface (MIT License) — github.com
[3] GTPlanet news article, July 26, 2022 — gtplanet.net
[4] GTPlanet telemetry software overview thread — gtplanet.net