holdmore vs Breather Trainer

hold more combines both co2 and o2 traning to increase your maximum breath-hold. Useful for freediving, spearfishing, or just something to do while meditating!

Breather guides you through breathing training — controlled hyperventilation rounds followed by extended breath holds. How it works: • 30–40 deep breaths, then a full exhale and breath hold • Recovery breath with 15-second hold • Repeat for 3–4 cycles Features: • Voice guidance: breathe in/out, countdowns, hold milestones • Animated breathing circle • Configurable rounds and cycles • Hold time history with personal bests • Monthly session calendar • Optional daily reminder No account. No subscription. No data leaves your device.