Know Your Cardio Baseline
Turn VO2 max into a clear fitness signal you can check, understand, and improve over time.
Fitness insight for iPhone
Understand your cardio fitness without stepping into a lab.
VO2 Lab helps you track VO2 max, read your aerobic fitness trends, and connect training habits to measurable progress.
9:41 VO2 Lab
Current VO2 max 48.6 +3.2 over 12 weeks
Training signal Your aerobic base is trending up.
Keep two steady sessions this week to protect the gain.
VO2 max trends
iOS first experience
0 lab visits required
Built for everyday athletes
Fitness science that fits your routine.
Train With Better Context
See how workouts, recovery, and consistency shape your aerobic fitness without needing lab equipment.
Spot Progress Earlier
Follow trend-focused insights that make small improvements visible before race day or your next fitness test.
Simple by design
Track the signal, skip the spreadsheet.
VO2 Lab focuses on the trend that matters: whether your aerobic engine is improving, holding steady, or slipping. It is designed for runners, cyclists, gym athletes, and anyone building better endurance with an iPhone.
Launching on iOS