# STAmina Apnea Trainer vs SeaThrough

The clearest difference is in-app purchases: SeaThrough at none against STAmina Apnea Trainer's 2. STAmina Apnea Trainer's advantage is ratings volume (5.4K vs 4) and update cadence (every 6 days vs fortnightly). On price, rating and ads there is nothing between them.

Both are free to download. STAmina Apnea Trainer sells 2 in-app purchases, starting at $4.99 per month. SeaThrough asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for STAmina Apnea Trainer against 5.0 for SeaThrough. That said, the two scores are not equally well evidenced: STAmina Apnea Trainer has 5.4K ratings behind it against 4, so its average is the more settled of the two.

STAmina Apnea Trainer ships an update every 6 days, SeaThrough fortnightly. The most recent releases landed on November 1, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | STAmina Apnea Trainer | SeaThrough |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (5.4K ratings)](https://appshunter.io/ios/app/stamina-apnea-trainer/id994874491/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/seathrough/id6758314434/reviews)** |
| Number of ratings | **5.4K** | 4 |
| Positive reviews | 88.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Fortnightly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 55 MB | 22 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Squarecrowd Apps, LLC](https://appshunter.io/developer/1438497992) | [MARTUN DAVOYAN](https://appshunter.io/developer/1872170946) |

## What reviewers say

### STAmina Apnea Trainer

[App page](https://appshunter.io/ios/app/stamina-apnea-trainer/id994874491)

This app helps users improve their breath-holding capabilities for activities like freediving, spearfishing, and other water sports. It offers various training tables and personalized programs to enhance physical and mental endurance underwater.

**Highlights:** 6 Apnea table options (O2 deprivation, CO2 tolerance, Wonka, Mix, Custom, Pranayama), Personalized training programs with 3 difficulty levels, Customizable exercise settings, Training reminders, Detailed statistics and training history, Voice guidance, Heart rate and oxygen saturation tracking (requires compatible monitor)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| STAmina Pro (1 Month) | $4.99 | per month |
| STAmina Pro (1 Year) | $29.99 | per year |

**What reviewers like**

- 🚀 Easy to use
- 👍 Helps improve breath hold
- 🚀 Customizable tables
- 👍 Tracks progress
- 👍 Integrates with devices

**What reviewers complain about**

- 🐛 Glitchy UI when switching devices
- 🐛 Unreliable Apple Watch sync
- 🐛 Buggy watch app
- 🐛 Laggy sync between watch and phone
- 🐛 Haptic feedback issues

**Reported bugs**

- Apple Watch app doesn't synchronize reliably
- Watch app missing features of phone app
- Random beeps and haptics not selected in settings
- App crashes when run from synced phone
- HRV not recorded in Apple Health

**Requested features**

- Recommended training regimens based on goals
- Voice announcements of passing time
- Ability to pause/resume rest intervals
- Apple Watch app with same functionality as phone app
- Integration with more pulse oximeters


### SeaThrough

[App page](https://appshunter.io/ios/app/seathrough/id6758314434)

This app forecasts ocean water clarity for divers and spearfishers, focusing on Southern California. It uses a map to explore coastal areas, check hourly breakdowns of conditions, and plan optimal times for visibility based on tide, swell, and wind.

**Highlights:** Map-based spot discovery, Hour-by-hour clarity forecast, Tide direction and timing, Saved spots and planned dives, Location data requests

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is STAmina Apnea Trainer free?

STAmina Apnea Trainer is free to download, with in-app purchases available.

### Is SeaThrough free?

SeaThrough is free to download, with no in-app purchases.

### Which has better reviews, STAmina Apnea Trainer or SeaThrough?

SeaThrough is rated higher. STAmina Apnea Trainer averages 4.9 out of 5 from 5.4K ratings, while SeaThrough averages 5.0 from 4 ratings.

### Do STAmina Apnea Trainer or SeaThrough have ads?

Neither STAmina Apnea Trainer nor SeaThrough shows ads.

### Which is updated more often, STAmina Apnea Trainer or SeaThrough?

STAmina Apnea Trainer ships an update every 6 days, and SeaThrough fortnightly. Most recently, STAmina Apnea Trainer was updated on November 1, 2026 and SeaThrough on October 19, 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.*