Naudic – Freediving Trainer
CO₂ & O₂ Tables · Apple Watch
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
Scientific CO2 & O2 training for freedivers. Adaptive algorithm, Apple Watch integration, heart rate tracking and a 12-week programme.
Dive deeper. Breathe smarter. Perform better.
Naudic is your personal freediving coach – built by a freediver for freedivers. The app combines evidence-based training methods with the latest Apple technology, adapting automatically to your level after every session.
Train smart
CO2 tables build your CO2 tolerance, O2 tables improve your oxygen efficiency, and Free Static measures your maximum capacity. The adaptive algorithm analyses your performance and wellbeing after every session and calculates the optimal target for your next training – automatically, with no manual input required.
New in Version 1.4
Box Breathing and Relax Tables are now available. Box Breathing calms your nervous system before training and balances heart rate variability. Relax Tables gently activate the dive reflex at maximum relaxation levels. Both modes include Apple Watch haptic feedback and heart rate tracking.
Apple Watch – your training partner on your wrist
Start and control sessions directly from Apple Watch. Real-time heart rate, precise breathing guidance with haptic feedback, and full synchronisation between iPhone and Watch. Apple Watch Ultra additionally captures dive depth and water temperature directly in your dive log.
12-Week Programme
A structured training programme guides you step by step towards your personal best. Week by week the algorithm adapts to your progress. After 12 weeks you see exactly how far you've come – with a detailed completion report and your next cycle ready to go.
Dive Log
Import real dives automatically from the Apple Fitness app (Apple Watch Ultra) or enter them manually. Link dives to training sessions and see how your training translates underwater.
Safety first
O2 training requires course qualification (AIDA 2 / SSI Level 1+). Buddy reminders for in-water training. Emergency contact storage. Naudic trains you – but never without a safety net.
What's included
- CO2 tables, O2 tables, Free Static apnea
- Box Breathing with square animation and Watch haptics
- Relax Tables with structured breathing guidance
- Adaptive algorithm after every session
- Apple Watch as a fully standalone app
- Heart rate and SpO₂ tracking per round
- Dive log with HealthKit import (Ultra)
- Progress charts and CO2 tolerance index
- 12-week programme with completion summary
- German and English
Start for free – full training with Premium.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Box Breathing with animated square visualisation
Relax Tables with CO2-style breathing animation
iPhone ↔ Watch remote control in both directions
Adaptive algorithm: hold target based on stored profile value
12-week completion screen with statistics
The developer, Martin Busse, 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:
- Health & Fitness
- Purchases
- Financial Info
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Martin Busse
- Size
- 14 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later. - Apple Watch
Requires watchOS 26.2 or later.
- iPhone
- Languages
- English and German
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment Information
- In-App Purchases
Yes
- VIP ₺49,99
- Naudic Premium ₺399,99
- Naudic Premium ₺2.499,99
- Copyright
- © M.Busse
