Holdfast: Freedive Trainer — ASO

By Jorge Bustamante on AppTrack Ninja.

Apnea & Breath-Hold Tables

Holdfast is a calm, focused breath-hold trainer for freedivers, spearos, and anyone learning to sit comfortably with the urge to breathe. Run proven CO₂ and O₂ tables on your iPhone — or entirely on your Apple Watch, screen-off and haptic-guided — so every session feels effortless. WHY HOLDFAST - CO₂ tables to blunt the urge to breathe; O₂ tables to extend your hold. - Guided sessions with gentle haptic and audio cues — eyes closed, no screen needed. - Built for Apple Watch: start, run, and finish a full session from your wrist, screen-off, driven by taps. - Progress that motivates: history, …

Categories: Health & Fitness, Productivity

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