# Freediving Apnea Exercise vs Stealth Training System

The clearest difference is in-app purchases: Stealth Training System at none against Freediving Apnea Exercise's 2. Stealth Training System also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Freediving Apnea Exercise sells 2 in-app purchases, starting at $5.99 per month. Stealth Training System asks for nothing beyond the download.

Freediving Apnea Exercise ships an update every 3 weeks, Stealth Training System fortnightly. The most recent releases landed on September 8, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Freediving Apnea Exercise | Stealth Training System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/freediving-apnea-exercise/id6479372267/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 28 MB | 4 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Taras Chernyshenko](https://appshunter.io/developer/1308198759) | [Michael Walters](https://appshunter.io/developer/6785952333) |

## What reviewers say

### Freediving Apnea Exercise

[App page](https://appshunter.io/ios/app/freediving-apnea-exercise/id6479372267)

Enhance your breath-hold capacity and underwater performance with specialized CO2 and O2 training tables. This app also offers box breathing exercises for stress management and improved focus. Perfect for freedivers, snorkelers, and surfers looking to extend their time in the water.

**Highlights:** CO2 and O2 training tables, Progress tracking, User-friendly interface, Daily reminders, Box breathing exercises, Stress management

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Access | $5.99 | per month |
| Yearly Membership | $29.99 | per year |


### Stealth Training System

[App page](https://appshunter.io/ios/app/stealth-training-system/id6785952331)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Freediving Apnea Exercise free?

Freediving Apnea Exercise is free to download, with in-app purchases available.

### Is Stealth Training System free?

Stealth Training System is free to download, with no in-app purchases.

### Do Freediving Apnea Exercise or Stealth Training System have ads?

Neither Freediving Apnea Exercise nor Stealth Training System shows ads.

### Which is updated more often, Freediving Apnea Exercise or Stealth Training System?

Freediving Apnea Exercise ships an update every 3 weeks, and Stealth Training System fortnightly. Most recently, Freediving Apnea Exercise was updated on September 8, 2026 and Stealth Training System on October 13, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*