Zenhold

Train to hold your breath longer — with the table trainer that never loses your session. Zenhold generates personal O₂ and CO₂ training tables from your max breath-hold, using conservative, freediving-standard limits (CO₂ holds are capped at 50% of your max — your safety is not a growth hack). WHY FREEDIVERS SWITCH TO ZENHOLD • Rock-solid sessions: check a message, lock your screen — the timer stays exactly right • Pause any time. One accidental tap never kills a 20-minute session • Apple Watch app (Lifetime Pro): train from your wrist — one buzz to breathe, two to hold • Apple Health: completed sessions are saved as mindful minutes • Audio that respects your podcast: cues duck your audio instead of stopping it • Voice + haptic guidance through every phase • Made for beginners too: O₂ and CO₂ training explained in plain language FREE, FOREVER Daily O₂ and CO₂ tables, guided max-hold test, recent history, Health sync. LIFETIME PRO — ONE-TIME PURCHASE Apple Watch app, custom table builder, unlimited history & stats, auto-progressing tables, CSV export, all breathing buddies, all breathwork patterns. No subscription. No account. No tracking. Your data never leaves your device. SAFETY Dry training only. Never practice breath-holds in or near water without a trained buddy. Train sitting or lying down. This app is not medical advice.