Aqua Moment vs Sleep Window
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Aqua Moment
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.
- Touch-based relaxation
- 360-degree image integration
- Use personal photos
- Immersive environments
- Calming experience
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Touch surface and you will be relaxed. Can use 360 degree image from photo library.
Sleep Window
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.
- 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
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あなたの睡眠は、睡眠回収局に納付されます。 就寝申告を提出すると、毎秒1 S¥（スリープ円）が自動的に計上。起床申告で納付額が確定し、その資金は管轄区域の都市開発に充当されます。 眠れば眠るほど、窓の外の街は灰色のコンクリートから、灯りが点り、看板が彩り、やがて黄金に輝く理想都市へと変わっていきます。 毎朝5時〜10時、窓を覗いてください。あなたの睡眠が、街をつくっています。 特徴 睡眠時間がそのまま街の発展資金に 7段階の街並み進化をAIがリアルタイム生成 和風・サイバーパンクなど、好きなテーマで自分だけの街を育成 朝だけ見える窓の景色 — 毎日の楽しみに コンプリートした街はコレクションに保存 利用規約 (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Aqua Moment | Sleep Window |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (4 ratings) — better | — |
| Positive reviews | 69.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 7.1 — better | 16.1 |
| Further details — not scored | ||
| Size | 20 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Nature UX | SAELI, LIMITED LIABILITY COMPANY |
Customer experience
Aqua Moment
Sleep Window
In-app purchases
Aqua Moment
- Remove Ads$0.99
Sleep Window
- 特権階級$2.991 Month
- ベーシックプラン$2.991 Month
- プレミアム$5.991 Month
- 特別恩赦令（記録復元）$0.99
