# 睡眠｜睡眠の記録と改善 vs NightRing

The clearest difference is in-app purchases: 睡眠｜睡眠の記録と改善 at none against NightRing's 6. 睡眠｜睡眠の記録と改善 also leads on ads (none vs shown) and iOS requirement (12.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. NightRing sells 6 in-app purchases, starting at $1.49 per month. 睡眠｜睡眠の記録と改善 asks for nothing beyond the download.

睡眠｜睡眠の記録と改善 ships an update every 3 months, NightRing every 6 weeks. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 睡眠｜睡眠の記録と改善 | NightRing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/id1531800310/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 76.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Size | 61 MB | 6 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [bondavi Inc.](https://appshunter.io/developer/805401904) | [Hiroyuki Kako](https://appshunter.io/developer/1581721316) |

## What reviewers say

### 睡眠｜睡眠の記録と改善

[App page](https://appshunter.io/ios/app/id1531800310)

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

**In-app purchases:** none


### NightRing

[App page](https://appshunter.io/ios/app/nightring/id6790335160)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $1.49 | per month |
| Plus Yearly | $11.99 | per year |
| Coffee | $2.99 | one-time |
| Good Burger | $9.99 | one-time |
| Plus Lifetime | $24.99 | one-time |
| Dinner | $29.99 | one-time |


## Frequently asked questions

### Is 睡眠｜睡眠の記録と改善 free?

睡眠｜睡眠の記録と改善 is free to download, with no in-app purchases.

### Is NightRing free?

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

### Do 睡眠｜睡眠の記録と改善 or NightRing have ads?

NightRing shows ads; 睡眠｜睡眠の記録と改善 does not.

### Which is updated more often, 睡眠｜睡眠の記録と改善 or NightRing?

睡眠｜睡眠の記録と改善 ships an update every 3 months, and NightRing every 6 weeks. Most recently, 睡眠｜睡眠の記録と改善 was updated on November 7, 2026 and NightRing on November 5, 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.*