# NeuralStack.io™ vs Sinira

The clearest difference is in-app purchases: Sinira at none against NeuralStack.io™'s 2. NeuralStack.io™'s advantage is update cadence (every 3 weeks vs every 16 months) and device support (3 vs 1). On price 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. Sinira asks for nothing beyond the download.

NeuralStack.io™ ships an update every 3 weeks, Sinira every 16 months. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | NeuralStack.io™ | Sinira |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/neuralstackio-focus-and-sleep/id6502728529/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 16 months |
| Monetization | Free with in-app purchases | — |
| Size | 179 MB | 6 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Banzai Labs](https://appshunter.io/developer/305909501) | [KARIN PIETRUSKA](https://appshunter.io/developer/1807527048) |

## 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 |


### Sinira

[App page](https://appshunter.io/ios/app/sinira/id6744404857)

**In-app purchases:** none


## Frequently asked questions

### Is NeuralStack.io™ free?

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

### Is Sinira free?

Sinira is free to download, with no in-app purchases.

### Do NeuralStack.io™ or Sinira have ads?

Neither NeuralStack.io™ nor Sinira shows ads.

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

NeuralStack.io™ ships an update every 3 weeks, and Sinira every 16 months. Most recently, NeuralStack.io™ was updated on October 6, 2026 and Sinira on October 1, 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.*