Description
Kiiro – Training Load & Zone Tracker for Runners and Athletes.
For runners who train with purpose and want to understand their training load, not just record workouts. Kiiro analyzes your VO2 max trends, heart rate zones, endurance metrics, and performance data to help you run smarter, improve safely, and hit your marathon goals faster.
Built for zone 2 training, lactate threshold work, and aerobic endurance. Track every metric that matters from cadence to training load with precision.
TRAINING LOAD — Know Your Effort
See how your running stress builds over time.
• Track recent (acute) training load
• Monitor long-term fitness trends
• View weekly, monthly, or custom period progress
• Balance training to avoid overtraining
Training load helps answer: Am I running too hard? Not enough? Or just right?
ROUTE COMPARISON — Compete With Yourself
Automatically compare your runs on the same route or course.
• See all your attempts and personal records
• Track pace, heart rate, and session scores
• Visual charts show improvement or slowdowns
• Identify your fastest runs and best efforts
INTENSITY DISTRIBUTION — Know Your Zones
Every run has a mix of easy, moderate, and hard effort. Kiiro shows you exactly where.
• Time spent in aerobic vs. anaerobic zones
• Check if your training matches your goals
• Track intensity trends over weeks and months
PERFORMANCE METRICS — Track What Matters
Advanced metrics to understand your running performance:
• VO2 max trends
• Resting heart rate and HRV
• Cadence, vertical oscillation, ground contact time
• TRIMP-based session score
• Detailed splits, maps, and zone breakdowns
GOALS & HISTORY
Set distance, duration, or consistency goals.
Review your full running history with trends, summaries, and detailed analytics.
Made for runners who care about the details. Train smarter. Improve with clarity.