# Naptime vs NeuralStack.io™

The clearest difference is review sentiment: NeuralStack.io™ at 100% against Naptime's 0%. NeuralStack.io™ also leads on rating (5.0 vs 2.0). Naptime's advantage is in-app purchases (none vs 2) and iOS requirement (9.0 vs 15.0). On price, ratings volume, 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. Naptime asks for nothing beyond the download.

NeuralStack.io™ holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 8 and 9 respectively. Written reviews point the same way: 0% of Naptime's written reviews are positive against 100% of NeuralStack.io™'s.

Naptime ships an update every 2 weeks, NeuralStack.io™ every 3 weeks. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Naptime | NeuralStack.io™ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (8 ratings)](https://appshunter.io/ios/app/naptime-power-nap-assistant/id1128614633/reviews) | **[5.0 (9 ratings)](https://appshunter.io/ios/app/neuralstackio-focus-and-sleep/id6502728529/reviews)** |
| Number of ratings | 8 | **9** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 101 MB | 179 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [杭州回车电子科技有限公司](https://appshunter.io/developer/1078874267) | [Banzai Labs](https://appshunter.io/developer/305909501) |

## What reviewers say

### Naptime

[App page](https://appshunter.io/ios/app/naptime-power-nap-assistant/id1128614633)

This intelligent eyeshade analyzes brainwaves to enhance power naps. It plays smart music, adjusts volume, and creates a stable environment for relaxation. Wake up feeling refreshed with real-time brainwave analysis.

**Highlights:** Smart music playback based on brainwaves, Intelligent volume adjustment, Noise exclusion for a stable environment, Smart wake-up based on relaxation levels, Detailed brainwave data analysis, Shake-to-feedback feature

**Features:** Vision Pro support

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Naptime free?

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

### Is NeuralStack.io™ free?

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

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

NeuralStack.io™ is rated higher. Naptime averages 2.0 out of 5 from 8 ratings, while NeuralStack.io™ averages 5.0 from 9 ratings.

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

Neither Naptime nor NeuralStack.io™ shows ads.

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

Naptime ships an update every 2 weeks, and NeuralStack.io™ every 3 weeks. Most recently, Naptime was updated on October 9, 2026 and NeuralStack.io™ on October 24, 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.*