# Box Breathing vs STACK DAYS Elite Training

The clearest difference is update cadence: Box Breathing at every 3 weeks against STACK DAYS Elite Training's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Box Breathing sells 5 in-app purchases, starting at $9.99 per month and STACK DAYS Elite Training sells 1 in-app purchase, starting at $249.00 per month. Whichever you choose, the download price is not the number that matters.

Box Breathing ships an update every 3 weeks, STACK DAYS Elite Training every 2 months. The most recent releases landed on October 1, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Box Breathing | STACK DAYS Elite Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (318 ratings)](https://appshunter.io/ios/app/box-breathing-float/id1605558336/reviews)** | — |
| Number of ratings | **318** | — |
| Positive reviews | 78.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 96 MB | 52 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, Vision Pro | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [STRV s.r.o.](https://appshunter.io/developer/330549300) | [Mobile Trainer, LLC](https://appshunter.io/developer/1793616106) |

## What reviewers say

### Box Breathing

[App page](https://appshunter.io/ios/app/box-breathing-float/id1605558336)

Enhance your well-being with guided breathwork exercises. This app offers personalized sessions based on a breathing test, with categories for calm, sleep, focus, and energy. Experience immersive audio, haptic feedback, and sound cues for stress reduction and improved performance.

**Highlights:** Personalized breathing test, Exercise categories (Calm, Sleep, Focus, Energize), Audio guide and sound cues, Haptic feedback, CO2 tolerance test, Stress and anxiety relief

**Features:** Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Float PRO - Monthly Membership | $9.99 | per month |
| Float PRO Breathing Exercises | $39.99 | per year |
| Float PRO Breathing Exercises | $49.99 | per year |
| Float PRO Breathing Exercises | $69.99 | per year |
| Float PRO Breathing Exercises | $199.99 | one-time |


### STACK DAYS Elite Training

[App page](https://appshunter.io/ios/app/stack-days-elite-training/id6741225635)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| STACK PRO | $249.00 | per month |


## Frequently asked questions

### Is Box Breathing free?

Box Breathing is free to download, with in-app purchases available.

### Is STACK DAYS Elite Training free?

STACK DAYS Elite Training is free to download, with in-app purchases available.

### Do Box Breathing or STACK DAYS Elite Training have ads?

Neither Box Breathing nor STACK DAYS Elite Training shows ads.

### Which is updated more often, Box Breathing or STACK DAYS Elite Training?

Box Breathing ships an update every 3 weeks, and STACK DAYS Elite Training every 2 months. Most recently, Box Breathing was updated on October 1, 2026 and STACK DAYS Elite Training on September 20, 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.*