# NeuralStack.io™ vs synappro breathe

The clearest difference is rating: NeuralStack.io™ at 5.0 against synappro breathe's 4.7. NeuralStack.io™ also leads on ratings volume (9 vs 3) and iOS requirement (15.0 vs 26.0). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. NeuralStack.io™ sells 2 in-app purchases, starting at $2.99 per month and synappro breathe sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

NeuralStack.io™ holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 9 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | NeuralStack.io™ | synappro breathe |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/neuralstackio-focus-and-sleep/id6502728529/reviews)** | [4.7 (3 ratings)](https://appshunter.io/ios/app/synappro-breathe/id6741250658/reviews) |
| Number of ratings | **9** | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 179 MB | 185 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Banzai Labs](https://appshunter.io/developer/305909501) | [synappro](https://appshunter.io/developer/1793662950) |

## What reviewers say

### NeuralStack.io™

[App page](https://appshunter.io/ios/app/neuralstackio-focus-and-sleep/id6502728529)

Create personalized audio experiences for focus, sleep, and mindset enhancement. Combine brainwave entrainment, guided breathing, and ambient sounds to build custom 'Stacks'. Listen offline and alongside other apps.

**Highlights:** Customizable Stacks with multi-stage elements, Brainwave entrainment (0.5-100 Hz), Guided breathing programs, Layered ambience and nature sounds, Offline listening, Integration with other apps, Stack playlists

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NeuralStack.io Monthly Subscription | $2.99 | per month |
| NeuralStack.io Annual Subscription | $24.99 | per year |


### synappro breathe

[App page](https://appshunter.io/ios/app/synappro-breathe/id6741250658)

This guided breathing app uses science-based techniques and engaging visuals to help you improve your well-being. Track your progress, customize sessions, and sync data across devices. It offers a free download with an optional one-time upgrade for enhanced features.

**Highlights:** Science-based breathing cycles, Engaging animated visuals, Mood and consistency tracking, Customizable session settings, iCloud sync across devices, Apple Health integration

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| synappro plus | $3.99 | one-time |


## Frequently asked questions

### Is NeuralStack.io™ free?

NeuralStack.io™ is free to download, with in-app purchases available.

### Is synappro breathe free?

synappro breathe is free to download, with in-app purchases available.

### Which has better reviews, NeuralStack.io™ or synappro breathe?

NeuralStack.io™ is rated higher. NeuralStack.io™ averages 5.0 out of 5 from 9 ratings, while synappro breathe averages 4.7 from 3 ratings.

### Do NeuralStack.io™ or synappro breathe have ads?

Neither NeuralStack.io™ nor synappro breathe shows ads.

### Which is updated more often, NeuralStack.io™ or synappro breathe?

NeuralStack.io™ ships an update every 3 weeks, and synappro breathe every 3 weeks. Most recently, NeuralStack.io™ was updated on October 6, 2026 and synappro breathe on October 9, 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.*