# FD Square Breathing Trainer vs Pro Dive

The clearest difference is in-app purchases: FD Square Breathing Trainer at none against Pro Dive's 3. FD Square Breathing Trainer also leads on iOS requirement (12.0 vs 18.0). Pro Dive's advantage is update cadence (every 5 weeks vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Pro Dive sells 3 in-app purchases, starting at $6.99 per month. FD Square Breathing Trainer asks for nothing beyond the download.

FD Square Breathing Trainer ships an update every 4 months, Pro Dive every 5 weeks. The most recent releases landed on October 4, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | FD Square Breathing Trainer | Pro Dive |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Size | 10 MB | 32 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| 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


### Pro Dive

[App page](https://appshunter.io/ios/app/pro-dive/id6444813304)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Dive monthly | $6.99 | per month |
| Pro Dive anual | $59.99 | per year |
| Pro Dive Lifetime | $139.99 | 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 Pro Dive free?

Pro Dive is free to download, with in-app purchases available.

### Do FD Square Breathing Trainer or Pro Dive have ads?

Neither FD Square Breathing Trainer nor Pro Dive shows ads.

### Which is updated more often, FD Square Breathing Trainer or Pro Dive?

FD Square Breathing Trainer ships an update every 4 months, and Pro Dive every 5 weeks. Most recently, FD Square Breathing Trainer was updated on October 4, 2026 and Pro Dive on September 29, 2026.

---

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