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StreamLogic picks the number that matters.

StreamLogic is the engineering layer of SimDeckOS. It records your reference laps, works out a live delta, and runs the Director: an engineer that watches the session and, when something starts to matter, puts the answer on your keys, the Stream Deck + strip, a supported wheel’s rim LEDs and an overlay above the game.

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  • Runs inside the free app
  • No setup — your fastest valid lap becomes the reference
  • Nothing is deleted if Premium lapses
SimDeckOS on a Stream Deck +
Plugin renderA real layout replaying a recorded Temerario GT3 lap at the Salzburgring; the strip steps through nine readouts. Revs and fuel are modelled; delta, position, brake temperatures and G-force are demo values. 18 readouts, 3 clusters, 57 fields for keys and dials, 7 ready-made key pages and 6 engineer beats, counted from the plugin’s own source.

One readout, wherever you can see it.

A readout is one thing StreamLogic knows, drawn to be read at speed. The same readout runs on a key, on a dial, on a Stream Deck +’s touch strip and on a supported wheel’s dash — you pick where, not what it becomes. The touch strip is a Stream Deck + part; every other surface takes the same readouts without one.

Delta
Delta
Plugin renderDelta on a key, a dial and the Stream Deck + strip, moving together with the deck above. The delta is a demo value: one recorded lap has nothing to compare against.
On a key
The value, its title and whatever the readout draws under it — a bar, a trace, a ladder.
On a dial
The same readout in the dial’s shape, on a Stream Deck +.
On the + strip
Full width across the touch strip, which only a Stream Deck + has.
On a wheel dash
The same readout on the glass, on a supported wheel.

One instrument, several keys.

Some things do not fit on one key. A cluster spreads a single instrument across a block of them: each key is a window into the same picture, and where you put the keys is what makes the block. Move one and the rest renumber themselves.

SimDeckOS on a Stream Deck XL
Radar
Tyres
Susp
IllustrationAll three clusters on one Stream Deck XL page, drawn by the plugin on made-up telemetry. The rings are drawn on top to show each block.
Radar
The spotter view, spread wide enough to read at a glance. Each key is one window onto the same radar.
Tyres
A 2×2 block maps exactly to the car: front left, front right, rear left, rear right — each with its temperature, pressure and wear.
Susp
The same four corners, showing ride height and travel — and turning red if a corner takes damage.

A block is made by placement alone: drop its keys where you want them and the corners sort themselves out. A hole in the block is simply a missing window — the keys around it stay truthful.

An engineer that picks the number.

You don’t have to decide in advance what belongs on screen. The Director watches the session. Short moments, like a car alongside, hold the display while they last and then hand it back. The session’s state, like having a reference lap or not, nudges it once and leaves you alone.

One decision, every surface
A key set to the Race engineer field shows what the Director just picked, and a wheel rim set to Follow draws the matching bar. Your wheel’s dash can follow the same beat too, if you switch that on.
You stay in charge
Tap a key and the Director stands down, 20 seconds by default. Every beat can be switched off, and you choose which screen each one hands the strip.
No screens full of dashes
A beat only fires when the sim reports what it needs. A sim with no spotter data simply never has a Traffic moment.
An engineer that picks the number.
Beat When The key shows The dash shows
Traffic WhenA car is alongside The key showsGap behind The dash showsRadar
Fuel WhenFuel runs critical, once a lap, no nagging The key showsFuel target: what to save per lap The dash showsRace
Pit WhenYou are in the pit lane The key showsPit in: laps the tank still gives you The dash showsYour pit screen
Coaching WhenYou have a reference lap here The key showsLosing it here: the sector costing most The dash showsDelta
Learning WhenNo reference yet for this car and track The key showsLast lap, as the benchmark The dash showsDelta
Debrief WhenThe replay after a banked lap The key showsConsistency The dash showsDelta

The dash only follows a beat if you switch that on; the strip follows by taking the field, not the readout.

Or start from a page that already works.

Ready-made StreamLogic pages you send straight to a device. Pick the deck, the profile and the page, and the app tells you whether it fits before it writes anything — and says where the preset is already installed, so you can resend it in place.

  • — Everything
  • — Shift lights
  • — Predictive delta
  • — Fuel & strategy
  • — Inputs
  • — Tyres & brakes
  • — Traffic

Clusters go the same way: drop a whole block at one key instead of placing it corner by corner.

The engineer, over your game.

For league nights and streams: the same engineer as a small window that stays on top of the game, so the delta and what the engineer says are where you are already looking.

It is a window that stays on top, so the game has to run windowed or borderless.

  • your game
    CoachingLosing it hereT6–T8 −0.21

    Card

    A small panel out of the racing line.

    Illustration

  • your game
    Coaching−0.151:23.57P3

    Bar

    One line across the top of the picture.

    Illustration

  • your game
    −0.15P3

    Corner

    The smallest of the four, tucked into a corner.

    Illustration

  • your game

    Strip

    The same screens as your Stream Deck + touch strip.

    Illustration

Each shape remembers its own position, it can be click-through, it scales, and it can open by itself when a session starts — and built-in controls switch it from a key, so you never leave the car to change it.

Give the rim a second job.

In a car whose own dash already shows the revs, your wheel’s rev lights repeat it. On a supported wheel, StreamLogic can hand the rim LED strip a different scene. You choose it per car in the Garage, because whether the revs are already in front of you depends on the car you climbed into.

  • Delta

    A centre-out bar: zero in the middle, faster grows one way, slower the other.

    Illustration · a tenth up on the reference

  • Sectors

    Your mini-sectors against the reference, straight on the rim.

    Illustration · one sector lost, one a personal best

  • Relative

    The cars ahead and behind, placed by gap. Close ones turn red and blink.

    Illustration · one car alongside, two in the window

  • Fuel

    Laps of fuel as a lit run. Amber near your warning, red and blinking when it is critical.

    Illustration · eight laps left, near the warning

  • Shift

    The car’s own shift lights.

    Illustration · at the shift point

  • Follow

    Whatever readout the strip is showing, which means whatever the Director decided.

    Illustration · the strip is on delta, so the rim is too

When two of them want the rim at once, the spotter wins, then a beacon, then the shift lights. The full order is in the guide.

Where the time went.

This is the engineer itself: it banks your reference laps and works out the numbers nothing in the sim hands you. A delta says you are slower. These say where, and whether the tyres are going off.

Delta and predicted lap
The live gap to your reference lap, and the lap time your current pace projects.
Losing it here
The part of the lap you are giving away the most time in, against your reference.
Consistency
The spread of your last five valid laps, in seconds. Lower is better.
Tyre trend
Pace falloff per lap over the stint. Wear shows as a rising number.

Plugin renderThe four numbers on real keys, drawn by the plugin’s own renderer on made-up telemetry — the same renderer your deck runs.

Nothing to record and nothing to choose: your fastest valid lap on each car and track becomes the reference by itself. A lap that ran off track or through the pits is not banked, and while you are on one, the live delta dims and says why.

One lap, every version of the track.

The same circuit often reaches your sim more than once — in Assetto Corsa especially, as mod versions of one layout in their own folders, with their own skins. StreamLogic knows they are one track and files your reference under it, by the circuit’s real name. One lap on any version gives you the reference and the live delta on every version of it.

Nothing to sort
The SimDeckOS team maps the versions, and the map arrives with content updates. A track that isn’t mapped yet works exactly as before, on its own.
Laps you already drove
Laps banked on a version before it was mapped fold in by themselves: the best reference stays, and the lap counts add up.
What stays apart
A different layout is a different circuit, so the GP track and the Nordschleife never share a lap. Nor do the two directions, or two sims. And a reference is always for the car you drove it in.

The full reference

Every beat, all six rim scenes, the order they claim the strip in, and the overlay’s cells — in the guide.

Read the StreamLogic guide

The cockpit is free.
The engineer is Premium.

Start with the free app and add the engineer when you want someone in your ear.

The free app

  • Parameters on every key, dial and LED
  • Unlimited pages, page triggers and the splitter
  • The Car Lab: shift lights, beacons and parameters, one set per car
  • The whole library, official and community
  • One layout per device, the built-in themes
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Premium adds

Premium

€4 / month

Placeholder price, not final

  • StreamLogic: reference laps, the delta and the Director
  • The engineer overlay, in four shapes
  • The rim scenes on a supported wheel
  • Garage history and Tracks
  • Several layouts per device, Looks, your own themes
See pricing