Every layer of performance,
scientifically designed
Hypercapnia Training
Classic CO₂ tables that systematically raise your tolerance to carbon dioxide — extending your breath-hold far beyond natural limits.
Hypoxia Tables
Structured oxygen tables that condition your body to operate efficiently with diminishing O₂ — the foundation of deep freediving performance.
Guided Relaxation
Audio-guided visualization and body-scan sessions. Learn to drop your heart rate on command — the hidden skill separating good from elite freedivers.
Performance Tracking
Log every session. Visualize your CO₂ tolerance curves, breath-hold milestones, and mental readiness over time. Know exactly how deep you can go.
Beyond the pool. Beyond the table.
Traditional freediving training stops at CO₂ and O₂ tables. Apnio goes deeper — integrating the physiological with the psychological. Because the real limit isn't oxygen. It's the mind.
Simple, honest pricing
Start free. Go deeper when you're ready.
- CO₂ training tables
- O₂ training tables
- Session timer with audio cues
- Unlimited sessions