# NightWell vs NAOs　公式アプリ

The clearest difference is in-app purchases: NAOs　公式アプリ at none against NightWell's 9. NAOs　公式アプリ also leads on ads (none vs shown) and iOS requirement (12.0 vs 16.0). NightWell's advantage is update cadence (every 3 weeks vs every 38 months). On price and device support there is nothing between them.

Both are free to download. NightWell sells 9 in-app purchases, starting at $9.99 per month. NAOs　公式アプリ asks for nothing beyond the download.

NightWell ships an update every 3 weeks, NAOs　公式アプリ every 38 months. The most recent releases landed on November 6, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | NightWell | NAOs　公式アプリ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (16 ratings)](https://appshunter.io/ios/app/nightwellsmart-sleep-tracker/id827600695/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 59.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 38 months |
| Monetization | Free with in-app purchases | — |
| Size | 121 MB | 41 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [株式会社C2](https://appshunter.io/developer/597389977) | [KITAMURA NAOHIRO](https://appshunter.io/developer/1573328604) |

## What reviewers say

### NightWell

[App page](https://appshunter.io/ios/app/nightwellsmart-sleep-tracker/id827600695)

This smart sleep companion helps you track sleep patterns, monitor snoring, and wake up gently with intelligent alarms. Gain personalized insights to improve rest, energy, and focus, with calming sounds and mindful tips for relaxation before bed.

**Highlights:** Sleep pattern tracking, Snoring monitoring, Intelligent smart alarm, Personalized sleep insights, Calming lull sounds, Sleep reports, Cloud backup

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Yearly | $39.99 | per year |
| Ad Removal (7 Days) | $0.49 | one-time |
| Alarm sound "Minute Waltz" | $0.99 | one-time |
| Lull Sound "Berceuse Op. 57" | $0.99 | one-time |
| Alarm sound "Time for relax" | $0.99 | one-time |
| Alarm sound "Slumber" | $0.99 | one-time |
| Alarm sound "Peer Gynt Morgenstemning Op.46  w/ES " | $0.99 | one-time |
| Alarm sound "Nocturne No.2" | $0.99 | one-time |


### NAOs　公式アプリ

[App page](https://appshunter.io/ios/app/naos/id1573328602)

**In-app purchases:** none


## Frequently asked questions

### Is NightWell free?

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

### Is NAOs　公式アプリ free?

NAOs　公式アプリ is free to download, with no in-app purchases.

### Do NightWell or NAOs　公式アプリ have ads?

NightWell shows ads; NAOs　公式アプリ does not.

### Which is updated more often, NightWell or NAOs　公式アプリ?

NightWell ships an update every 3 weeks, and NAOs　公式アプリ every 38 months. Most recently, NightWell was updated on November 6, 2026 and NAOs　公式アプリ on September 19, 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.*