# IkiJime Tool vs STAmina Apnea Trainer

The clearest difference is rating: STAmina Apnea Trainer at 4.9 against IkiJime Tool's 2.3. STAmina Apnea Trainer also leads on review sentiment (88% vs 50%) and update cadence (every 6 days vs every 16 months). IkiJime Tool's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. IkiJime Tool sells 1 one-off in-app purchase and STAmina Apnea Trainer sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

STAmina Apnea Trainer holds the better App Store score, 4.9 against 2.3. That said, the two scores are not equally well evidenced: STAmina Apnea Trainer has 5.4K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 50% of IkiJime Tool's written reviews are positive against 88% of STAmina Apnea Trainer's.

IkiJime Tool ships an update every 16 months, STAmina Apnea Trainer every 6 days. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | IkiJime Tool | STAmina Apnea Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/ikijime-tool/id704308194/reviews) | **[4.9 (5.4K ratings)](https://appshunter.io/ios/app/stamina-apnea-trainer/id994874491/reviews)** |
| Number of ratings | 3 | **5.4K** |
| Positive reviews | 50.0% of reviews | **88.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 6 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 33 MB | 55 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [DigsFish Services Pty Ltd](https://appshunter.io/developer/704308197) | [Squarecrowd Apps, LLC](https://appshunter.io/developer/1438497992) |

## What reviewers say

### IkiJime Tool

[App page](https://appshunter.io/ios/app/ikijime-tool/id704308194)

This app guides anglers on how to humanely dispatch fish using the ikijime method. It offers detailed information, including x-rays and brain locations, for over 200 species, accessible offline.

**Highlights:** Humane fish dispatch guide, Ikijime method instructions, X-rays showing brain location, Database of 200+ fish species, Offline functionality, GPS-based sorting, Customizable favorites list

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ikijime Tool Extreme | $2.99 | one-time |


### 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


## Frequently asked questions

### Is IkiJime Tool free?

IkiJime Tool is free to download, with in-app purchases available.

### Is STAmina Apnea Trainer free?

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

### Which has better reviews, IkiJime Tool or STAmina Apnea Trainer?

STAmina Apnea Trainer is rated higher. IkiJime Tool averages 2.3 out of 5 from 3 ratings, while STAmina Apnea Trainer averages 4.9 from 5.4K ratings.

### Do IkiJime Tool or STAmina Apnea Trainer have ads?

Neither IkiJime Tool nor STAmina Apnea Trainer shows ads.

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

IkiJime Tool ships an update every 16 months, and STAmina Apnea Trainer every 6 days. Most recently, IkiJime Tool was updated on November 1, 2026 and STAmina Apnea Trainer on November 6, 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.*