Personalized breath-hold tables, real-time SpO2 monitoring, and analytics that actually matter. One app. One price. No subscription.
The #1 complaint across every competing app. Monthly fees to hold your breath.
Dry training in one app, dive log in another. No connection between the two.
Existing apps show one SpO2 reading. That tells you nothing about hypoxic response.
Finish a session and… that's it. No trends, no PB tracking, no progression insight.
$12.99 one-time purchase. No subscriptions, no recurring charges, no tricks.
Tables, biometrics, dive log, and analytics — all in one place.
Real-time blood oxygen tracking throughout your hold. See exactly when hypoxia kicks in.
The only app that maps your contractions against your oxygen curve. Data nobody else gives you.
Every feature designed around how freedivers actually train — not bolted onto a generic fitness framework.
CO2, O2, Wonka, and fully custom tables — auto-generated from your personal best. Start training in 2 taps.
Continuous blood oxygen monitoring via Bluetooth sensors. Watch your SpO2 curve in real time as you hold.
Map diaphragm contractions against your oxygen curve. Understand your hypoxic response like never before.
Trends over time, personal best tracking, session heatmaps, and detailed metrics for every hold you do.
Customizable voice cues for breathe-up, hold, and recovery. Eyes closed, fully focused — the app talks you through it.
All data stored locally on your device. No accounts, no cloud, no internet required. Train anywhere.
Standard Bluetooth Low Energy. No proprietary hardware required.
Not all apnea apps are created equal.
| Feature | STAmina | Freediving Trainer | St4t1c |
|---|---|---|---|
| Pricing | Subscription | Free (basic) | $12.99 one-time |
| CO2 / O2 Tables | ✓ | ✓ (fixed only) | ✓ + Wonka + Custom |
| Continuous SpO2 | ✕ (initial only) | ✕ | ✓ Real-time |
| Contraction Tracking | ✓ | ✕ | ✓ + SpO2 correlation |
| Session Analytics | Basic | ✕ | Full trends + PB |
| Voice Guidance | ✓ | ✓ | ✓ Customizable |
| Session Notes | ✕ | ✕ | ✓ |
| Taps to Start | 4–5 | 2 | 2 (quick-start) |
| Dark / AMOLED | ✓ | ✕ | ✓ Pure black |
We train breath-holds, not recurring billing. Pay once, own St4t1c forever.
Free tier available — CO2 tables, basic timer, and your last 10 sessions. No sign-up required. Upgrade when you're ready.
Join the early access list. Be the first to train with St4t1c when it launches on Google Play.