# FD Square Breathing Trainer vs Easy Deco

The clearest difference is in-app purchases: FD Square Breathing Trainer at none against Easy Deco's 3. FD Square Breathing Trainer also leads on iOS requirement (12.0 vs 16.3). Easy Deco's advantage is update cadence (every 2 months vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Easy Deco sells 3 in-app purchases, starting at $1.99 per month. FD Square Breathing Trainer asks for nothing beyond the download.

FD Square Breathing Trainer ships an update every 4 months, Easy Deco every 2 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | FD Square Breathing Trainer | Easy Deco |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/easy-deco/id1561538676/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 10 MB | 3 MB |
| Requires iOS | **12.0** | 16.3 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andreas Horvath](https://appshunter.io/developer/1484572340) | [Millennium Ltd](https://appshunter.io/developer/348691313) |

## What reviewers say

### FD Square Breathing Trainer

[App page](https://appshunter.io/ios/app/fd-square-breathing-trainer/id1544245504)

**Features:** macOS Compatibility

**In-app purchases:** none


### Easy Deco

[App page](https://appshunter.io/ios/app/easy-deco/id1561538676)

This app assists technical divers in planning dives for open circuit and closed circuit systems. It allows for easy setup of various gas mixes and cylinders, providing insights into their effects and requirements. The app warns users about critical factors like PPO2, ICD, and gas density.

**Highlights:** Open circuit and closed circuit dive planning, Customizable gas and cylinder setups, Real-time gas requirement calculations, Warnings for PPO2, ICD, and gas density, Supports multiple common gas mixes

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Annual | $9.99 | per year |
| Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is FD Square Breathing Trainer free?

FD Square Breathing Trainer is free to download, with no in-app purchases.

### Is Easy Deco free?

Easy Deco is free to download, with in-app purchases available.

### Do FD Square Breathing Trainer or Easy Deco have ads?

Neither FD Square Breathing Trainer nor Easy Deco shows ads.

### Which is updated more often, FD Square Breathing Trainer or Easy Deco?

FD Square Breathing Trainer ships an update every 4 months, and Easy Deco every 2 months. Most recently, FD Square Breathing Trainer was updated on October 27, 2026 and Easy Deco on October 24, 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.*