SPEEDY

A drag strip
timing system,
in your pocket.

Speedy times your acceleration runs with GPS and the accelerometer — 0–60, 60–130, the quarter mile with trap speed — corrects the picture with density altitude, and posts your best to a shared leaderboard.

Download on theApp Store Get it onGoogle Play

The timing slip

One standing pass, as the app scored it
Speed · mph
0–60
4.00s
60–130
8.70s
0–130
12.70s
Speed · km/h
0–100
4.18s
100–200
7.47s
0–200
11.65s
Distance
60 ft
2.19s @ 36 mph
1/8 mile
7.97s @ 100 mph
1/4 mile
11.92s @ 126 mph

Sample data: a single standing pass, timed by the app — 132 mph top speed, 0.79 g peak, GPS ±1.1 mph on 11 satellites, 73 °F at 774 ft with a 2,043 ft density altitude, +1.2% grade. The 1‑ft rollout brings this pass's 0–60 to 3.72 s, and every board keeps splits at each 10 mph or km/h.

Speedy's performance report: 60 ft, 1/8 mile and 1/4 mile cards with trap speeds, the full mph splits table with 1 ft rollout, and the run's ground track drawn between start and finish flags on a dark street map with peak g, top speed and satellite pills.

How a pass gets timed

GPS and the accelerometer, fused

Speed comes from GPS; the launch instant comes from the accelerometer. The report shows GPS accuracy, satellite count and launch confidence, so you know exactly what your number is worth.

Density altitude, computed per run

Temperature and pressure are looked up for where you are, and the report carries elevation, slope and density altitude — the difference between a brag and a baseline.

The whole curve, kept

Every run is saved on your phone with its splits, speed and g traces, and the ground track drawn on a map. Nothing to export, nothing expiring.

Put it on the board

Publish a run and your time goes up with its trap speed, peak g, GPS quality, slope, density altitude, and the car that set it — year, make, model, mods. The server reads the time out of the run itself, so nobody types their way to the top.

The boards are ready for the Speedy board, too: a run measured by the dedicated hardware below lands on the same leaderboard as phone runs, marked with its own glyph the way iOS and Android runs already are.

Your route stays home

Publishing sends the numbers, never the map. The GPS track of your run is stored only on your phone and is stripped from every leaderboard entry before it leaves the device.

Speedy's 60-130 mph leaderboard: three ranked entries by the same car with times, rolling-start badges, density altitude and grade.

The Speedy board

Hardware · coming soon

A phone does everything; an instrument does one thing. The Speedy board is a pocket GPS timer built around a dedicated u‑blox MAX‑M10S receiver with a full-size 25 × 25 mm patch antenna — the kind of aperture no phone has room for — and a six-axis IMU watching for the launch. It talks to the app over Bluetooth, and its runs go on the same boards. The first boards are on the production line now.

Speedy board product render on black: an exploded view of the clear-cased GPS timer with callouts for the 25 by 25 mm patch antenna, u-blox MAX-M10S receiver, ESP32-C3 wireless module, four blue LEDs, side button, USB-C port, battery and 3D-printed bottom case, beside assembled top and side views.

Dedicated GNSS

u‑blox MAX‑M10S with its own 25 × 25 mm patch antenna, plus a backup cell that keeps satellite data warm for hot starts.

Launch detection

A six-axis IMU catches the instant the car moves and reads g-force — the same job the phone's accelerometer does, without the phone.

Lives with the app

Bluetooth LE to your phone, firmware updates through the app, USB‑C charging, and a four-LED gauge: charge level, a sweep while it hunts satellites, solid on fix.

Pocket sized

An 84 × 34 mm board in a clear-top case with magnets in the base. No pre-orders yet — it will appear here first.