Zenhold

Apnea tables & breath hold

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

O₂ and CO₂ tables built from your own max hold — with a timer that survives a locked screen, and an Apple Watch app. One-time purchase, no subscription, no account. 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.

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Breathwork, upgraded: • Retention rounds: breathe, exhale, hold, recover. The hold is capped at your tested max. • Physiological sigh pattern • Custom and endless session length • Singing-bowl and gong tones (switch off under Settings › Cues) • Pro: build your own breathing patterns • Pro: every breathwork pattern on Apple Watch, with wrist haptics

Version 1.0.1

The developer, David Schmittwilken, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
David Schmittwilken
Size
39.8 MB
Category
Health & Fitness
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
  • Apple Watch
    Requires watchOS 9.0 or later.
Languages
English and 3 more
  • English, French, German, Spanish
Age Rating
9+
In-App Purchases
Yes
Copyright
© 2026 David Schmittwilken
  • Developer Website
  • Privacy Policy

    • More by David Schmittwilken

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