# 陣痛タイマー by ぴよログ vs 生理管理アプリ 4MOON

The clearest difference is in-app purchases: 陣痛タイマー by ぴよログ at none against 生理管理アプリ 4MOON's 10. 陣痛タイマー by ぴよログ also leads on ads (none vs shown) and review sentiment (84% vs 71%). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 生理管理アプリ 4MOON sells 10 in-app purchases, starting at $1.99 per month. 陣痛タイマー by ぴよログ asks for nothing beyond the download.

陣痛タイマー by ぴよログ ships an update every 3 weeks, 生理管理アプリ 4MOON monthly. The most recent releases landed on September 22, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | 陣痛タイマー by ぴよログ | 生理管理アプリ 4MOON |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (10 ratings)](https://appshunter.io/ios/app/4moon/id1565472349/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | **84.0% of reviews** | 70.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 21 MB | 112 MB |
| Requires iOS | 16.0 | **15.4** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [PiyoLog Inc.](https://appshunter.io/developer/440099912) | [4MEEE INC.](https://appshunter.io/developer/956135781) |

## What reviewers say

### 陣痛タイマー by ぴよログ

[App page](https://appshunter.io/ios/app/by/id1486291787)

This app helps expectant mothers easily track labor contractions by simply tapping buttons. It records duration and intervals, allowing for seamless sharing of real-time updates with partners and family. Prepare for childbirth with this user-friendly tool.

**Highlights:** Contraction timer and interval counter, One-tap recording of contractions, Real-time sharing with family, Push notifications for contraction start, History log with editing capabilities, Easy-to-understand interface

**In-app purchases:** none


### 生理管理アプリ 4MOON

[App page](https://appshunter.io/ios/app/4moon/id1565472349)

This app helps women track their menstrual cycles, predict periods and ovulation, and manage overall health. It offers features for fertility tracking, pregnancy support, diet management, and symptom logging, with optional online medical consultations.

**Highlights:** Menstrual and ovulation prediction, Fertility tracking and pregnancy support, Diet and weight management, Health symptom logging, Calendar for schedule and health tracking, Integration with Apple Health, Online medical consultations

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示プラン | $1.99 | per month |
| 記録分析プラン | $1.99 | per month |
| 食事管理forソラレピ_１ヶ月 | $1.99 | per month |
| パートナー共有プラン | $1.99 | per month |
| 医療相談プラン | $3.49 | per month |
| 広告非表示プラン | $9.99 | per year |
| 食事管理forソラレピ_6ヶ月 | $11.99 | per 6 months |
| 記録分析プラン | $14.99 | per year |
| きろくまハートテーマカラー | $1.99 | one-time |
| きろくまテーマカラー | $1.99 | one-time |


## Frequently asked questions

### Is 陣痛タイマー by ぴよログ free?

陣痛タイマー by ぴよログ is free to download, with no in-app purchases.

### Is 生理管理アプリ 4MOON free?

生理管理アプリ 4MOON is free to download, with in-app purchases available.

### Do 陣痛タイマー by ぴよログ or 生理管理アプリ 4MOON have ads?

生理管理アプリ 4MOON shows ads; 陣痛タイマー by ぴよログ does not.

### Which is updated more often, 陣痛タイマー by ぴよログ or 生理管理アプリ 4MOON?

陣痛タイマー by ぴよログ ships an update every 3 weeks, and 生理管理アプリ 4MOON monthly. Most recently, 陣痛タイマー by ぴよログ was updated on September 22, 2026 and 生理管理アプリ 4MOON on September 9, 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.*