# リズム手帳 ｰ生理日管理～妊活まで vs Ring Protein

The clearest difference is ads: Ring Protein at none against リズム手帳 ｰ生理日管理～妊活まで's shown. Ring Protein also leads on update cadence (every 9 days vs every 2 months). リズム手帳 ｰ生理日管理～妊活まで's advantage is iOS requirement (15.0 vs 17.5). On price, in-app purchases and device support 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 10 in-app purchases, starting at $1.99 per month and Ring Protein sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

リズム手帳 ｰ生理日管理～妊活まで ships an update every 2 months, Ring Protein every 9 days. The most recent releases landed on November 6, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | リズム手帳 ｰ生理日管理～妊活まで | Ring Protein |
| --- | --- | --- |
| 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 | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Freemium | — |
| Size | 54 MB | 7 MB |
| Requires iOS | **15.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Nihon Enterprise Co.,Ltd.](https://appshunter.io/developer/347285057) | [TAKUMA YANO](https://appshunter.io/developer/1869479039) |

## 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 (10)**

| 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「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 |


### Ring Protein

[App page](https://appshunter.io/ios/app/ring-protein/id6757891962)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro機能をアンロック | $2.99 | one-time |


## 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 Ring Protein free?

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

### Do リズム手帳 ｰ生理日管理～妊活まで or Ring Protein have ads?

リズム手帳 ｰ生理日管理～妊活まで shows ads; Ring Protein does not.

### Which is updated more often, リズム手帳 ｰ生理日管理～妊活まで or Ring Protein?

リズム手帳 ｰ生理日管理～妊活まで ships an update every 2 months, and Ring Protein every 9 days. Most recently, リズム手帳 ｰ生理日管理～妊活まで was updated on November 6, 2026 and Ring Protein on October 25, 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.*