# STAmaster - Apnea Trainer — Freediving Breath-Hold Coach

> Freediving Breath-Hold Coach (iPhone/iPad app by FAIZAL FIKHRI ZAKARIA.)

- Source: https://appshunter.io/ios/app/stamaster-apnea-trainer/id6760490272 (this page in markdown: same URL + `.md`)
- Developer: [FAIZAL FIKHRI ZAKARIA](https://appshunter.io/developer/1884698881)
- Category: Health & Fitness, Sports
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 6 MB
- Languages: English
- Released: 2026-03-26
- Data updated: 2026-06-05
- User reviews in markdown: https://appshunter.io/ios/app/stamaster-apnea-trainer/id6760490272/reviews.md

## What is STAmaster?

STAmaster is the dedicated Static Apnea (STA) training companion for freedivers of every level — from beginners working toward their first 2-minute hold to competitive athletes chasing podium times.

PRECISION HOLD TIMER
Voice-coached breath-holds with real-time contraction marking. The high-precision timer continues running when your screen locks. Wrist haptics signal phase transitions so you can train eyes-closed.

CO2 & O2 TRAINING TABLES
Create fully custom CO2 tolerance and O2 adaptation tables. The app guides you through every round with audio cues and automatically logs each session to your history.

AI COACHING
A built-in rule-based coach analyses your session data and delivers personalised feedback after every session. Detect training plateaus, track CO2 tolerance trends, and receive actionable tips calibrated to your actual performance history.

PERSONAL BESTS & ANALYTICS
Every session is logged. Review your hold time history, PB progression, contraction onset trends, CO2 tolerance curves, and session volume over time in the Progress tab.

28-DAY TRAINING PLANS
Generate a personalised 4-week training plan based on your current PB, goal, experience level, and weekly availability. Plans use proper periodisation — foundation, CO2 focus, push, and integration weeks.

SUPPLEMENTARY TRAINING
Guided breathwork protocols, freediving-specific yoga flows, cardio sessions, and meditation exercises are all included — because STA performance depends on whole-body fitness.

HEART RATE & READINESS
Connect any Bluetooth heart rate monitor (Polar, Garmin, Wahoo) or Apple Watch for real-time HR during sessions. Morning HRV and resting heart rate from Apple Health power your daily training readiness score.

SAFETY FIRST
STAmaster enforces a mandatory buddy check before any wet static (in-water) session. The app will not start a water breath-hold without a confirmed training partner present. Freediving safety is non-negotiable.

WHAT IS STATIC APNEA (STA)?
STA is a competitive and recreational freediving discipline in which the athlete floats face-down and holds their breath for as long as possible. It is the foundation of all freediving performance and the primary target of breath-hold training.

REQUIREMENTS
- iPhone with iOS 17 or later
- Apple Health (optional — for HRV readiness score)
- Bluetooth HR monitor or Apple Watch (optional — for real-time heart rate)


## Version history (last 4 releases)

### 1.7 — 2026-06-02

• Guest Mode: Hand your phone to a training buddy and time their hold without
   mixing it into your own stats and PBs. Add their name, and guest sessions
  stay tagged separately in your history.
  • Interactive Timer Guide: New hands-on walkthrough teaches the core timer
  gestures before you ever hold your breath: tap to mark a contraction,
  double-tap to surface. Shows automatically for your first few sessions, and
  you can replay it anytime from "How the timer works."

### 1.6 — 2026-05-17

Pulse oximeter support is here. Connect a Lepu PC-60FW for live SpO2 during every hold, with a customizable hypoxia alert. New "Your potential" card on Progress predicts your ceiling from your best CO2 tolerance and struggle endurance. Hold summaries now include full SpO2 trajectories.

### 1.5 — 2026-05-11

- Fixed CO2 and O2 table generation, tables now produce correct hold/rest progressions for your level
- Stability and reliability improvements

### 1.1 — 2026-03-26

No release notes.

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*