Yo-Yo Test

Can You Accurately Measure Your Athletic Endurance Without a Lab?

For athletes in high-intensity, intermittent sports like soccer, basketball, and rugby, raw speed means little without the stamina to sustain explosive efforts throughout a full match. The Yo-Yo Test app by Ruval Enterprises delivers a specialized, field-ready tool designed to simulate the exact physiological demands of stop-and-go sports. Instead of generic running assessments, this app precisely replicates the Yo-Yo Intermittent Recovery and Yo-Yo Intermittent Endurance protocols—both Levels 1 and 2—based on the scientifically validated frameworks developed by Dr. Jens Bangsbo. This means you get a laboratory-grade endurance evaluation that fits in your pocket, ready for the pitch, court, or track.

Precision-Driven Testing Modes for Peak Performance

The app strips away unnecessary complexity to focus on what matters: accurate, repeatable fitness assessment. You gain access to four distinct test protocols, each calibrated for different fitness baselines and sport-specific demands. The Yo-Yo Intermittent Recovery Level 1 (YYIR1) targets athletes with a solid aerobic foundation, while Level 2 (YYIR2) pushes advanced performers into higher anaerobic thresholds. Similarly, the Yo-Yo Intermittent Endurance Level 1 (YYIE1) and Level 2 (YYIE2) challenge sustained aerobic capacity over longer durations. Every test follows the exact beep cadence, shuttle distance (20 meters for recovery, variable for endurance), and speed progression established in peer-reviewed sports science literature.

Real-Time Audio Guidance and Critical Performance Metrics

During each test, the app functions as your personal coach, delivering clear, pre-recorded voice prompts or customizable audio cues at every turn. You never need to glance at a screen mid-run—the audio system announces the start of each shuttle, the countdown to the next speed level, and the active recovery period duration. As you progress, the display updates live metrics including:

• Current time to midpoint for pacing awareness
• Countdown timer until the next speed increase
• Recovery phase duration and countdown
• Total distance covered in meters
• Elapsed test time for performance tracking

For the YYIR1 protocol, the app also calculates an estimated VO₂Max value once you surpass the critical 1000-meter threshold, giving you a direct comparison to standardized aerobic capacity norms.

Comprehensive Results and Practical Workflow

Once you complete a test, the app presents a detailed results screen showing your final level reached and total distance accumulated. While the current version does not include an automatic history log or CSV export, the clean, high-contrast interface makes it effortless to capture a screenshot for your personal training journal or team database. The entire UI is optimized for one-handed operation during active testing, with large touch targets and minimal menu navigation—no swiping through submenus while you're catching your breath.

Designed for Coaches and Athletes Alike

• Simultaneous multi-test support – Run recovery and endurance protocols for different athletes in a single session without switching profiles.
• Adjustable audio cues – Choose between male/female voice prompts, simple beeps, or silent mode with only visual countdowns.
• Battery-light operation – Optimized foreground service minimizes power drain during 20+ minute endurance tests.
• Screen-on lock – Keeps display active during the entire test so you never miss a metric update.
• No account required – Full offline functionality means you can test anywhere, from remote training camps to indoor courts.

Exclusive Access for First Users – Download Now

Limited offer: Get the full feature set without restrictions during the initial launch period. Today only, new installs receive access to all four test protocols and custom audio settings. Coaches and sports scientists can evaluate team-wide fitness levels immediately without any subscription commitments. The app is actively maintained with protocol accuracy updates based on the latest sports medicine research.

Download the Yo-Yo Test mobile app now and start benchmarking your endurance against validated athletic standards.

Internet connection required for initial download. In-app purchases available for advanced analytics and team management modules.