About
On Piste+ is an AI-driven performance analysis feature integrated into the Rossignol On Piste mobile app, developed in collaboration with CEA-LETI, the French technology research center. The result of six years of R&D, it turns any modern smartphone into a powerful skiing performance sensor — no connected watch or dedicated hardware required. Using your phone's built-in GPS, accelerometer, and gyroscope, On Piste+ captures dozens of data points per second to perform a full 3D analysis of skier movement in real time. Its proprietary AI algorithm was trained on over 220 runs performed by ENSA (French National Ski and Mountaineering School) instructors across four defined skill levels — Beginner, Intermediate, Advanced, and Expert — achieving 95% accuracy in validation by the expert panel. The app goes beyond basic metrics like distance and duration, delivering advanced performance indicators including rhythm (turns per minute), power transferred to skis (in watts), speed (km/h), and the composite OP+ Score (100–500), which synthesizes power, speed, and rhythm to estimate a skier's technical level. On Piste+ also integrates social features through seasonal challenges, allowing skiers to compete with friends or family, evaluate their performance, and discover Rossignol equipment best suited to their level. It is completely free to download and use on iOS and Android, making professional-grade skiing analytics accessible to all ability levels.
Key Features
- AI Skill Level Recognition: Proprietary AI algorithm trained on 220+ expert-validated runs classifies skiers into four levels (Beginner, Intermediate, Advanced, Expert) with 95% accuracy.
- Smartphone-Only 3D Motion Analysis: Leverages your phone's built-in GPS, accelerometer, and gyroscope to capture dozens of data points per second — no wearables or external sensors needed.
- Advanced Performance Metrics: Tracks rhythm (turns per minute), power (watts transferred to skis), speed (km/h), and the composite OP+ Score synthesizing all three into a single technical rating.
- OP+ Score: A 100–500 composite score combining power, speed, and rhythm to give skiers a clear, motivating benchmark of their current technical level.
- Social Challenges & Equipment Matching: Seasonal connected challenges let skiers compete with friends or family and discover Rossignol gear best matched to their ability level.
Use Cases
- A recreational skier uses On Piste+ to track their OP+ Score across a season and see measurable improvement in their rhythm and power output.
- A ski instructor recommends On Piste+ to students to provide objective data on their technique progression alongside in-person coaching.
- A group of friends uses the seasonal 'Get more Watts' challenge to compete on a shared leaderboard and add a competitive element to their ski holiday.
- An intermediate skier uses the equipment matching feature to identify which Rossignol Speed range skis are best suited to their current performance level.
- A parent tracks their child's skiing development across multiple trips, using skill level classifications to monitor progression from Beginner to Intermediate.
Pros
- Completely Free: On Piste+ is a free feature of the free On Piste app — no subscription, no extra hardware purchase required.
- No Additional Hardware: Works entirely with sensors already built into modern smartphones, removing the barrier of buying dedicated sports wearables.
- Rigorously Validated AI: The underlying model was validated by ENSA expert instructors with 95% accuracy, lending real credibility to the skill assessments.
- Engaging Progression Loop: Seasonal challenges and a clear scoring system provide motivation and a social dimension that encourages regular practice.
Cons
- Sport-Specific Use Case: Exclusively designed for alpine skiing, making it irrelevant outside winter ski environments.
- Smartphone-Dependent Accuracy: Performance of the sensors and phone placement in the pocket can affect measurement stability, especially across different device models.
- Limited to Rossignol Ecosystem: Equipment recommendations and challenges are tied to Dynastar/Rossignol product lines, which may not suit skiers using other brands.
Frequently Asked Questions
Does On Piste+ require any additional hardware or sensors?
No. On Piste+ works exclusively with your smartphone's built-in GPS, accelerometer, and gyroscope. No connected watch, smart boot, or external sensor is needed.
How accurate is the AI skill level assessment?
The AI model was trained on over 220 runs by ENSA (French National Ski and Mountaineering School) instructors and validated with 95% accuracy by the expert panel.
Is On Piste+ free to use?
Yes. On Piste+ is a free feature within the On Piste app, which is also free to download on both iOS and Android.
What metrics does On Piste+ track?
It tracks rhythm (turns per minute), power transferred to skis (in watts), speed (km/h), and an OP+ Score (100–500) that combines these into a single technical level indicator.
Who developed the AI technology behind On Piste+?
On Piste+ was developed by Rossignol Group in collaboration with CEA-LETI, a leading French technology research center, over six years of R&D.
