Your smart trainer becomes
your aerodynamic analyzer

From 25 km/h, aerodynamics accounts for 70 to 95% of total resistance — it’s the number one factor slowing you down, far more than weight or equipment. Yet no standard smart trainer measures your aero position. On Zwift, MyWhoosh or Kinomap, you push harder without ever knowing if your position is costing you 30 or 50 wasted watts. AeroX changes the game: using a simple webcam, the app analyzes your silhouette in real time and calculates your frontal area (CdA). You instantly see how many km/h and watts each adjustment gains you. Results measured across 300+ sessions: +2 to 3 km/h of speed and 30 to 40 W saved at the same effort. That’s the equivalent of 30 to 45 minutes gained on an Ironman — without pedaling harder, just by optimizing your position.

To use AeroX, you need a computer (macOS or Windows), your bike on a support, and a camera — your laptop's built-in webcam, a USB webcam, or even your smartphone over Wi-Fi. That's all you need for basic aero analysis: AeroX measures your frontal area (CdA) in real time with no additional sensors. For Power Mode (position/watts link) and Speed Mode (resistance linked to your position), a Bluetooth FTMS smart trainer is required: Wahoo Kickr, Elite Direto, Tacx Neo, Saris H3 and most recent models are compatible. Heart rate monitors from Garmin, Polar and Suunto are also supported. Setup takes 2 minutes: place the camera about 1.3 m in front of the trainer, launch AeroX, calibrate in two clicks — and you're ready to ride.

Under 2 minutes. Place your webcam about 1.3 m in front of your trainer — on a tripod, a shelf, or even on a chair. Launch AeroX on your computer, click both ends of your handlebar to calibrate distance and width: done. The first time, you also set the camera-to-bike distance. These settings are saved: next sessions, you just launch and ride. AeroX automatically detects your smart trainer and heart rate strap via Bluetooth — no complex configuration. If your trainer isn’t interactive, you can still use visual analysis mode to see your frontal area change in real time. For comparison, a wind tunnel session requires 2 to 4 hours of travel and setup. With AeroX, you go from setup to pedaling in 120 seconds.

AeroX is compatible with 95% of smart trainers on the market via Bluetooth FTMS: Wahoo Kickr, Elite Direto and Suito, Tacx Neo and Flux, Saris H3, and most recent models. For basic aero analysis (real-time CdA measurement), a smart trainer isn’t mandatory — a simple webcam and your bike on a support are enough. Power Mode and Speed Mode require an FTMS trainer to link resistance to your position. Heart rate monitors from Garmin, Polar and Suunto are supported. AeroX runs on macOS and Windows — no tablet or smartphone needed for the main screen. If your trainer doesn’t appear in the list, contact us: we regularly add new models. In short, if you already ride on Zwift or MyWhoosh, your equipment is compatible with AeroX.

20 years ago, the heart rate monitor was a gadget. Today, no one trains without one. 10 years ago, the power meter was reserved for pros. Today, most serious cyclists use one. Aerodynamics is the next lever to democratize — and that's exactly what AeroX does. Built by Olivier Demichel, former CNRS researcher and triathlete, AeroX uses AI-powered video analysis to measure your frontal area in real time. This isn't a theoretical estimate: it's a physical measurement of your silhouette, frame by frame, with 3% repeatability. The gains are concrete and measured: +2 to 3 km/h on average across 300+ sessions. AeroX doesn't replace your power meter — it complements it by adding the aerodynamic dimension that no one was measuring on a smart trainer until now.

Cycling isn’t just sitting in the bunch. Echelons, breakaways, pulling — aero makes the difference. With +3 km/h, you might enjoy attacking.

You can try AeroX from day one with the free plan: analyze your position, measure your CdA, see the impact of each adjustment in real time. That's enough to discover your main aero levers and see the possible gains. The subscription unlocks advanced features: Power Mode to link your position to your watts, Speed Mode where trainer resistance adapts to your aerodynamics, GPX simulation to prepare a real course, and time trials with rankings. Above all, the subscription turns a one-time discovery into a lasting habit. Holding an efficient aero position doesn't happen by chance — it's a technical skill that requires repetition, like pedaling out of the saddle or accelerating out of a corner. With regular training on AeroX, your aero position becomes a natural reflex: your sixth sense when you ride outdoors.

Being in position isn't enough — it also needs to be effective. Most cyclists think they're aerodynamic while invisible details cost them 10 to 30 watts: head 3 cm too high, elbows 5 cm too wide, shoulders not tucked in. Without objective measurement, you can't know. AeroX makes these details visible in real time: you adjust your head, your CdA drops 2% — you see it instantly on screen. Our measurements show that even experienced cyclists still gain 1 to 2 km/h by refining their position with objective feedback. Moreover, your position degrades with fatigue: AeroX shows you how your CdA evolves throughout the session, so you learn to hold an efficient position even after 2 hours of effort. It's the difference between thinking you're aero and measuring it.