# NeuralStack.io™ vs LuminaryGem

The clearest difference is in-app purchases: LuminaryGem at none against NeuralStack.io™'s 2. LuminaryGem also leads on update cadence (every 2 days vs every 3 weeks) and iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. NeuralStack.io™ sells 2 in-app purchases, starting at $2.99 per month. LuminaryGem asks for nothing beyond the download.

NeuralStack.io™ ships an update every 3 weeks, LuminaryGem every 2 days. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | NeuralStack.io™ | LuminaryGem |
| --- | --- | --- |
| 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 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 179 MB | 34 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Banzai Labs](https://appshunter.io/developer/305909501) | [诗 文](https://appshunter.io/developer/1834333370) |

## 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 |


### LuminaryGem

[App page](https://appshunter.io/ios/app/luminarygem/id6751432834)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NeuralStack.io™ free?

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

### Is LuminaryGem free?

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

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

Neither NeuralStack.io™ nor LuminaryGem shows ads.

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

NeuralStack.io™ ships an update every 3 weeks, and LuminaryGem every 2 days. Most recently, NeuralStack.io™ was updated on October 6, 2026 and LuminaryGem on October 8, 2026.

---

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