# Spatial Sleep vs Halo

The clearest difference is review sentiment: Halo at 50% against Spatial Sleep's 0%. Halo also leads on rating (5.0 vs 4.6) and iOS requirement (15.0 vs 17.6). Spatial Sleep's advantage is ratings volume (11 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Halo holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Spatial Sleep has 11 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Spatial Sleep's written reviews are positive against 50% of Halo's.

Spatial Sleep ships an update every 3 months, Halo every 2 months. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Spatial Sleep | Halo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (11 ratings)](https://appshunter.io/ios/app/spatial-sleep/id6449580101/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/halo-brain-stimulation/id6748301539/reviews)** |
| Number of ratings | **11** | 2 |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 131 MB | 176 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Sound Health Systems, Inc.](https://appshunter.io/developer/1500011226) | [Flow Neuroscience AB](https://appshunter.io/developer/1149864190) |

## What reviewers say

### Spatial Sleep

[App page](https://appshunter.io/ios/app/spatial-sleep/id6449580101)

This science-backed app uses acoustic resonance harmonies, paired with a wearable headband, to help users fall asleep faster, stay asleep longer, and wake up refreshed. It offers drug-free, non-invasive sleep support and includes post-sleep breathwork and brain teaser games.

**Highlights:** Acoustic resonance harmonies for sleep, Wearable headband integration, Clinically proven sleep improvement, Drug-free and non-invasive, Personalized harmonies via machine learning, Post-sleep breathwork exercises, Brain teaser games for alertness

**Features:** macOS Compatibility

**In-app purchases:** none


### Halo

[App page](https://appshunter.io/ios/app/halo-brain-stimulation/id6748301539)

This app uses a wearable device to deliver gentle electrical currents to the brain, aiming to improve mood, sleep, and focus. It guides users through sessions, tracks progress, and offers educational content for wellness goals.

**Highlights:** Transcranial direct current stimulation (tDCS), Mood improvement, Better sleep support, Enhanced focus, Usage tracking, Educational content

**In-app purchases:** none


## Frequently asked questions

### Is Spatial Sleep free?

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

### Is Halo free?

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

### Which has better reviews, Spatial Sleep or Halo?

Halo is rated higher. Spatial Sleep averages 4.6 out of 5 from 11 ratings, while Halo averages 5.0 from 2 ratings.

### Do Spatial Sleep or Halo have ads?

Neither Spatial Sleep nor Halo shows ads.

### Which is updated more often, Spatial Sleep or Halo?

Spatial Sleep ships an update every 3 months, and Halo every 2 months. Most recently, Spatial Sleep was updated on October 2, 2026 and Halo 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.*