# Sleep Cue vs Nature Core

The clearest difference is update cadence: Nature Core at every 8 days against Sleep Cue's every 3 months. Sleep Cue's advantage is iOS requirement (11.0 vs 17.6). On price, review sentiment, 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.

Sleep Cue ships an update every 3 months, Nature Core every 8 days. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Sleep Cue | Nature Core |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/sleep-cue/id1508045969/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 8 days** |
| Monetization | Free | Free |
| Size | 157 MB | 34 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Enchanted Wave LLC](https://appshunter.io/developer/1452734801) | [Batu Akdogan](https://appshunter.io/developer/1764733157) |

## What reviewers say

### Sleep Cue

[App page](https://appshunter.io/ios/app/sleep-cue/id1508045969)

This app serves as an interactive companion for a wireless brainwave headband. It displays real-time EEG signals and brainwave power spectrograms, enabling users to trigger custom cues based on sleep stages and brainwave activity for lucid dreaming.

**Highlights:** Real-time EEG signal viewing, Brainwave power spectrogram, Customizable cue triggering, Lucid dream induction techniques, Research collaboration opportunities

**Features:** macOS Compatibility

**In-app purchases:** none


### Nature Core

[App page](https://appshunter.io/ios/app/nature-core/id6661032107)

This app helps you understand and reduce your environmental impact. Track your carbon footprint, discover eco-friendly tips, and connect with a community of like-minded individuals dedicated to sustainability.

**Highlights:** Carbon Footprint Tracker, Eco-Friendly Tips Library, Community Engagement, Nature-Themed Interface, Personalized Recommendations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sleep Cue free?

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

### Is Nature Core free?

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

### Do Sleep Cue or Nature Core have ads?

Neither Sleep Cue nor Nature Core shows ads.

### Which is updated more often, Sleep Cue or Nature Core?

Sleep Cue ships an update every 3 months, and Nature Core every 8 days. Most recently, Sleep Cue was updated on October 24, 2026 and Nature Core 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.*