# Apnea Trainer vs Stealth Training System

The clearest difference is in-app purchases: Stealth Training System at none against Apnea Trainer's 11. Stealth Training System also leads on iOS requirement (15.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Apnea Trainer sells 11 in-app purchases, starting at $1.99 per 7 days. Stealth Training System asks for nothing beyond the download.

Apnea Trainer ships an update every 3 weeks, Stealth Training System fortnightly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Apnea Trainer | Stealth Training System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (13 ratings)](https://appshunter.io/ios/app/apnea-trainer-nea/id6461216531/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 90.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Freemium | — |
| Size | 54 MB | 4 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [keinois OU](https://appshunter.io/developer/1597616328) | [Michael Walters](https://appshunter.io/developer/6785952333) |

## What reviewers say

### Apnea Trainer

[App page](https://appshunter.io/ios/app/apnea-trainer-nea/id6461216531)

Enhance your breath-holding abilities for freediving, spearfishing, and other water sports. This app offers personalized training tables, progress tracking, and guides to help you improve CO2 tolerance, oxygen utilization, and mental preparedness underwater.

**Highlights:** Personalized training tables, CO2 and O2 tolerance training, Apnea walks training, Visual progress tracking, Training log, Home screen widgets, Detailed guides

**Features:** Family Sharing

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nea PRO (Weekly) | $1.99 | per 7 days |
| Nea PRO (Weekly) | $2.99 | per 7 days |
| Nea PRO (Monthly) | $3.99 | per month |
| Nea PRO (monthly) | $4.99 | per month |
| Nea PRO (Monthly) | $5.99 | per month |
| Nea PRO (Annual) | $11.99 | per year |
| Nea PRO (Annual) | $11.99 | per year |
| Nea PRO (Annual) | $14.99 | per year |
| Nea PRO (Annual) | $17.99 | per year |
| Nea PRO (Lifetime) | $34.99 | one-time |
| Nea PRO (Lifetime) | $49.99 | one-time |


### 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 Apnea Trainer free?

Apnea Trainer 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 Apnea Trainer or Stealth Training System have ads?

Neither Apnea Trainer nor Stealth Training System shows ads.

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

Apnea Trainer ships an update every 3 weeks, and Stealth Training System fortnightly. Most recently, Apnea Trainer was updated on October 30, 2026 and Stealth Training System on October 31, 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.*