# リズム手帳 ｰ生理日管理～妊活まで vs 陣痛タイマー by ぴよログ

The clearest difference is in-app purchases: 陣痛タイマー by ぴよログ at none against リズム手帳 ｰ生理日管理～妊活まで's 12. 陣痛タイマー by ぴよログ also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). On price, review sentiment, device support and iOS requirement there is nothing between them.

Both are free to download. リズム手帳 ｰ生理日管理～妊活まで sells 12 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.

リズム手帳 ｰ生理日管理～妊活まで ships an update every 2 months, 陣痛タイマー by ぴよログ every 3 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | リズム手帳 ｰ生理日管理～妊活まで | 陣痛タイマー by ぴよログ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (97 ratings)](https://appshunter.io/ios/app/id575109564/reviews)** | — |
| Number of ratings | **97** | — |
| Positive reviews | 76.1% of reviews | **84.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Freemium | **Ad-supported** |
| Size | 54 MB | 23 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Nihon Enterprise Co.,Ltd.](https://appshunter.io/developer/347285057) | [PiyoLog Inc.](https://appshunter.io/developer/440099912) |

## What reviewers say

### リズム手帳 ｰ生理日管理～妊活まで

[App page](https://appshunter.io/ios/app/id575109564)

Track your menstrual cycle, predict fertile days, and monitor your health. Offers pregnancy support, weight and basal body temperature tracking, and body fat percentage recording. Includes data backup and password protection for privacy.

**Highlights:** Period prediction, Fertility tracking, Pregnancy support, Basal body temperature recording, Weight and body fat tracking, Data backup, Password lock

**Features:** Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ベーシックプラン400 | $1.99 | per month |
| ベーシックコース30 | $1.99 | per month |
| ベーシックコース30(旧) | $2.99 | per month |
| ベーシックプラン360 | $3.49 | per month |
| Delete Ad | $0.99 | one-time |
| アイコン「ふんわり体調管理2」 | $1.99 | one-time |
| アイコン「スケジュール（ひよこ）」 | $1.99 | one-time |
| アイコン「スケジュール（いぬ）」 | $1.99 | one-time |
| アイコン「ふんわり予定」 | $1.99 | one-time |
| アイコン「女子Ⅱ」 | $1.99 | one-time |
| アイコン「シンプルバッジ」 | $1.99 | one-time |
| アイコン「カラー」 | $1.99 | one-time |


### 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


## Frequently asked questions

### Is リズム手帳 ｰ生理日管理～妊活まで free?

リズム手帳 ｰ生理日管理～妊活まで is free to download, with in-app purchases available.

### 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.

### Do リズム手帳 ｰ生理日管理～妊活まで or 陣痛タイマー by ぴよログ have ads?

リズム手帳 ｰ生理日管理～妊活まで shows ads; 陣痛タイマー by ぴよログ does not.

### Which is updated more often, リズム手帳 ｰ生理日管理～妊活まで or 陣痛タイマー by ぴよログ?

リズム手帳 ｰ生理日管理～妊活まで ships an update every 2 months, and 陣痛タイマー by ぴよログ every 3 weeks. Most recently, リズム手帳 ｰ生理日管理～妊活まで was updated on October 24, 2026 and 陣痛タイマー by ぴよログ on October 25, 2026.

---

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