# Aqua Moment vs Sleep Window

The clearest difference is review sentiment: Sleep Window at 100% against Aqua Moment's 70%. Aqua Moment's advantage is iOS requirement (7.1 vs 16.1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Aqua Moment sells 1 one-off in-app purchase and Sleep Window sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Aqua Moment ships an update every 3 weeks, Sleep Window every 10 days. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Aqua Moment | Sleep Window |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (4 ratings)](https://appshunter.io/ios/app/aqua-moment/id793364189/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 69.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 20 MB | 10 MB |
| Requires iOS | **7.1** | 16.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nature UX](https://appshunter.io/developer/494846342) | [SAELI, LIMITED LIABILITY COMPANY](https://appshunter.io/developer/1450627776) |

## What reviewers say

### Aqua Moment

[App page](https://appshunter.io/ios/app/aqua-moment/id793364189)

This app offers a relaxing experience by allowing users to interact with a touch-sensitive surface. You can also use your own photos to create immersive 360-degree environments for a personalized calming session.

**Highlights:** Touch-based relaxation, 360-degree image integration, Use personal photos, Immersive environments, Calming experience

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Sleep Window

[App page](https://appshunter.io/ios/app/sleep-window/id6759549503)

This app transforms your sleep into a currency that funds urban development. As you sleep, your "Sleep Yen" accumulates and is used to build and upgrade a city that evolves from gray concrete to a vibrant, glowing metropolis. Watch your city grow each morning through your window.

**Highlights:** Sleep converted to city development funds, AI-generated city evolution in 7 stages, Customizable city themes (Japanese, Cyberpunk), Morning window view of your city, Save completed cities to collection

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 特権階級 | $2.99 | per month |
| ベーシックプラン | $2.99 | per month |
| プレミアム | $5.99 | per month |
| 特別恩赦令（記録復元） | $0.99 | one-time |


## Frequently asked questions

### Is Aqua Moment free?

Aqua Moment is free to download, with in-app purchases available.

### Is Sleep Window free?

Sleep Window is free to download, with in-app purchases available.

### Do Aqua Moment or Sleep Window have ads?

Neither Aqua Moment nor Sleep Window shows ads.

### Which is updated more often, Aqua Moment or Sleep Window?

Aqua Moment ships an update every 3 weeks, and Sleep Window every 10 days. Most recently, Aqua Moment was updated on October 24, 2026 and Sleep Window on October 7, 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.*