# 陣痛ナビ ～助産師のアドバイスで赤ちゃんの健康管理 vs Contraction Timer

The clearest difference is iOS requirement: 陣痛ナビ ～助産師のアドバイスで赤ちゃんの健康管理 at 13.0 against Contraction Timer's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 陣痛ナビ ～助産師のアドバイスで赤ちゃんの健康管理 sells 10 one-off in-app purchases and Contraction Timer sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

陣痛ナビ ～助産師のアドバイスで赤ちゃんの健康管理 ships an update every 4 months, Contraction Timer every 6 months. The most recent releases landed on September 30, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 陣痛ナビ ～助産師のアドバイスで赤ちゃんの健康管理 | Contraction Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/id694931309/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | Free with in-app purchases | — |
| Size | 15 MB | 48 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [Recstu Inc.](https://appshunter.io/developer/495129203) | [NAOYA ONO](https://appshunter.io/developer/1530328146) |

## What reviewers say

### 陣痛ナビ ～助産師のアドバイスで赤ちゃんの健康管理

[App page](https://appshunter.io/ios/app/id694931309)

This app helps expectant mothers track labor contractions with a simple stopwatch feature. It records the start time and intervals of contractions, providing alerts for when to contact the hospital. Additional features include a countdown to the due date and a baby memo section for storing images.

**Highlights:** Labor contraction tracking, Contraction interval recording, Hospital contact alerts, Countdown to due date, Baby memo for images, Simple stopwatch interface

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 明治神宮　清正の井戸2 | $0.99 | one-time |
| 晴明神社1 | $0.99 | one-time |
| 晴明神社2 | $0.99 | one-time |
| 水天宮1 | $0.99 | one-time |
| 水天宮2 | $0.99 | one-time |
| 水天宮3 | $0.99 | one-time |
| 熊野那智大社　那智の滝1 | $0.99 | one-time |
| 熊野那智大社　那智の滝2 | $0.99 | one-time |
| 斎場御嶽 | $0.99 | one-time |
| 八海山神社 | $0.99 | one-time |


### Contraction Timer

[App page](https://appshunter.io/ios/app/contraction-timer-labor-log/id6475923879)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support Developer | $0.99 | one-time |
| Remove ads | $3.99 | one-time |


## Frequently asked questions

### Is 陣痛ナビ ～助産師のアドバイスで赤ちゃんの健康管理 free?

陣痛ナビ ～助産師のアドバイスで赤ちゃんの健康管理 is free to download, with in-app purchases available.

### Is Contraction Timer free?

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

### Do 陣痛ナビ ～助産師のアドバイスで赤ちゃんの健康管理 or Contraction Timer have ads?

Both 陣痛ナビ ～助産師のアドバイスで赤ちゃんの健康管理 and Contraction Timer show ads.

### Which is updated more often, 陣痛ナビ ～助産師のアドバイスで赤ちゃんの健康管理 or Contraction Timer?

陣痛ナビ ～助産師のアドバイスで赤ちゃんの健康管理 ships an update every 4 months, and Contraction Timer every 6 months. Most recently, 陣痛ナビ ～助産師のアドバイスで赤ちゃんの健康管理 was updated on September 30, 2026 and Contraction Timer on October 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*