SpeedAngle Lap Timer - Master the Art of Cornering

SpeedAngle is a 10Hz GPS Lap Timer with Lean Angle Measurement and G-Forces. GPS+GLONASS enabled.

SpeedAngle R4 Software Download

Click on the buttons below to Download latest version of SpeedAngle R4 & USB Driver
Last Updated - October 2018 Version Apex R009
Last Updated Apex Firmware R014

SpeedAngle R4 is a simple yet powerful tool to analyze your ride. With G force color-coded on the trace and its unique graphs of speeds, lean angles, and longitudinal G’s, it provides visual clues to help relive your riding motions, find your riding style, and improve your cornering skill. Hold your mouse key and drag to define an area to create an Area Report. R4 has integrated the original Track Manager software with it. So you can managed track settings with R4. You can even edit a track setting directly on the trace!


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Main Screen

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Loaded Log File


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Open Log Data

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Loaded Log Data showing Ideal Time


Are you ready to download? It's totally FREE of CHARGE.
Simply click on the button below.

Once you have downloaded there is no installation required, just unzip and click on the SpeedAngle R4 .exe file.
If downloading for the first time then please also download USB Driver prior to connecting Lap Timer.

Download SpeedAngle R4 Apex Software     Download USB Driver     Download Firmware Update

SpeedAngle R4 Software System Requirements

Laptop Power Management: If you are downloading with your laptop, please make sure your battery management plan is set at HIGH PERFORMANCE.
GMOS downloads at a speed 50 times higher than many UART devices to save download time. It requires the full capacity of the USB port.
If your laptop is not set at high performance, you might encounter difficulty when downloading logs.

Microsoft .NET Framework 3.0 and UP: You can go to Control Panel –> Uninstall a Program to check your .NET version. As long as your Windows is up-to-date, it will be fine.

Mac Users: You can run R4 in virtual Windows environment on your Mac.

SpeedAngle R4 is an ongoing project. We will be adding more features to it periodically in the future. Please check back from time to time for the latest release.

  • Setting up your speedangle
  • Tracks
  • Features

Software Installation

SpeedAngle R4 is a simple yet powerful tool to analyze your ride. With G force color-coded on the trace and its unique graphs of speeds, lean angles, and longitudinal G’s.

The software is designed to run on MS Windows only.


In addition, there is a complete pdf manual available for the SpeedAngle Lap Timer. [English Version]

Download Here

Tracks Pre-Loaded

We provide all Lap Timers with pre-loaded Australian Tracks with sectors already added.

Up to 15 tracks can be stored on the SpeedAngle unit.

Track Manager

You can edit tracks and add your own personal sectors via the software using your Windows compatible computer.

More about Track Manager

Lap Timer

Automatically detects your track location, starts without any user input. Auto new tracks can be created.

Accuracy is within 1/1000 second subject to good GPS signal.

Compare Laps

Using the SpeedAngle R4 software you can compare laps from any session.

Download Software

More SpeedAngle Features

  • Track Location Auto Select +

    In most cases, once you are on a Track, all you need is power GMOS on, and then it will take care of itself. This allows you to focus on the more important thing – perform to the best – instead of being distracted by the tool that is supposed to help you.
  • Best Lap Indication +

    Once you have a new best lap, the whole lap time display area will be highlighted for a pre-designated period of time. Just a glance and you know you have made another progress.
  • Lean Angle Measurement +

    The point of lean angle measurement is not how far you can lean, but to know exactly how and where you are leaning in a corner. This, plus the acceleration/deceleration G measurement and GPS trace, can clearly mark how hard and how long you are braking before entering a turn, what your cornering speed is, if the throttle is rolled on again before or after exiting the apex, just to name a few.
  • Driving Mode for Road Riding +

    Feeling like going for an easy ride on an open road or to the twisties but would still like your motion data recorded? You can choose to switch to Driving Mode. This mode shows your lean angles real-time with an angle meter, displays the max angles of your last three turns, and records your speeds, G’s, lean angle’s and GPS traces.
  • Data Logging +

    Data is logged every session you go out, you can also review the sessions on your device. The software will then show you the trace and all measurements such as Speed, Lean Angle and G-Forces.
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