KNURL
The racing dashboard that feels like hardware
Knurl turns your iPhone or iPad into a machined telemetry instrument for your racing rig. Works with Gran Turismo 7 on PS5 and PS4 over your home network. No account, no cloud, no subscription.
Two faces, one instrument
Garage
Always-dark cockpit instruments, glanced at while driving.
Swiss
An engineer's timing sheet, read after the stint.
Instrument grade
120 fps on ProMotion displays, zero jank at a 60 Hz telemetry stream. Gauges drawn like machined hardware, not phone UI.
Private by design
Your console and your screen, nothing else. The app talks only to your console on your home network: no account, no cloud, no analytics, ever.
Free tier that stays free
Connect, race dash, and lap timing are free forever. One single lifetime unlock adds the strategy layouts. No subscription, never.
Try it with no console
Demo mode replays a real lap so you can feel the instrument before you ever connect.
Lap timing that respects the stint
Live lap, last lap, best lap, and delta to best. A session log with fuel per lap that survives app restarts and clears only when you say so.
Fuel strategy with opinions
Rolling burn rate, laps remaining at current pace, target-lap math, and a pit window hint that ends in a plain answer, not a chart to interpret.
Review like an engineer
After the stint, the Swiss face turns your session into a timing sheet: lap tables, comparisons, and a print-style export you can drop straight into your team chat.
Feels like hardware
Purposeful haptics on iPhone, a rev limiter you can feel, and gauges that never smooth away a gear change. When in doubt, we do less, better.
How it works
- 1Enable telemetry in the game's settings
- 2Open Knurl on the same Wi-Fi
- 3Race. The dash finds your console and lights up.
Works with Gran Turismo 7 on PS5 and PS4 over your home network.
Knurl is in active development. TestFlight beta coming. Built by one person who cares about frame times.