XtrmUs is a new generation of motion recording systems. It is trusted by outdoor athletes around the world to capture and track movements to extend the limits of their performance.

XtrmUs is your personal coach.

It embeds a voice processor that provides you with real time audio feedback on parameters like speed, acceleration and more.

XtrmUs cares for your safety in everyday outdoor activities.

Recommended for sports where precise analysis of motion makes the difference and where compromise on safety is not an option.


Motion tracking

XtrmUs embeds a complete set of sensors monitoring in real time your environment.

XtrmUs analyses trajectory and body orientation in 3D space with super high accuracy.

The heart of XtrmUs is a powerful Cortex processor capable of monitoring all sensors 10 times per second.

Real time data are stored in the internal memory transferable through USB.


XtrmUs acts as a safety beacon and broadcasts emergency data. It can exchange voice and data call with DMR compatible devices. It uses neighboring XtrmUs devices as a self organized network to expand the communication range and maximizes chances of rescue. No need for GSM coverage to keep in touch!

XtrmUs embeds a track&find interface with visual and audio feedback for navigation towards the emergency spot.

Emergency calls traffic is logged for later event analysis.


Xtrmus provides free access to community server to upload and share recorded data.

The web interface provides a toolbox for graphic representation of:

  • main parameters like altitude, speed, glide, distance etc.
  • CESIUM® 3D cartographic projection with real time player
  • and many more functions for motion analysis.

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    Our philosophy

    The idea of XtrmUs was born in 2018 after many brain-storming sessions with various personalities of the outdoor sports community.

    In 2019, several prototypes of Wearable Electronic Flight Instruments System were developed and tested during wingsuit and paragliding flights. The XPilot was born!

    While motion monitoring is fundamental to improve performance, the question of safety is vital. Most of our sports activities take place outdoor and deal with a certain level of risk. That's why, since 2021 we have been working on the emergency call. The XtrmUs family welcomed the XSafe!

    XtrmUs product line is commercially available.




      X-Pilot, the first product of our XtrmUs range is a Swiss army knife for outdoor sports where speed is the critical factor!

    • Ultra-compact and powerful
    • Records data and analyses movements in real time
    • Audio feedback for real time guidance
    • Unmatched recording frequency of spatial parameters, up to 10 times faster than the best competing systems, allows to measure speed beyond 500Km/h!
    • Features multiple sensors like GPS, inertial measurement unit, barometer, thermometer and hygrometer
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      X-Safe, the second product of the XtrmUs range has exactly the same features as X-Pilot plus :

    • A long range digital radio module for voice and data transmission
    • Emergency call for safety management
    • Audio and video guidance towards caller's position

    • X-Safe prototypes are under field testing.



      The community interface for data analysis is our third XtrmUs product. Our website aims to bring together outdoor sports community. In the login area athletes are provided with uncomparable tools.

    • Share and exchange data between friends
    • Play their tracks in 3D and in real time
    • Compare their tracks with world champions

    • In the future XtrmUs website will be used to organise online competitions.



    XtrmUs development team is located in the North of the French Alps where all our products are designed and assembled.

    Our team has built many years of expertise in designing electronic system and embedded software. We rely on a network of Europe and US based partners for product manufacturing.

    Feel free to contact us for any technical or commercial inquiry at: xtrmus.eu@gmail.com