# 母子手帳＋パパ  ママと赤ちゃんの健康管理 vs 酸素ボンベの残量計算 / O2Calc

The clearest difference is review sentiment: 酸素ボンベの残量計算 / O2Calc at 100% against 母子手帳＋パパ  ママと赤ちゃんの健康管理's 60%. 酸素ボンベの残量計算 / O2Calc also leads on ads (none vs shown) and update cadence (every 6 weeks vs every 4 months). 母子手帳＋パパ  ママと赤ちゃんの健康管理's advantage is monetization model (ad-supported vs free with in-app purchases) and iOS requirement (13.0 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

母子手帳＋パパ  ママと赤ちゃんの健康管理 ships an update every 4 months, 酸素ボンベの残量計算 / O2Calc every 6 weeks. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 母子手帳＋パパ  ママと赤ちゃんの健康管理 | 酸素ボンベの残量計算 / O2Calc |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 60.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 13 MB | 8 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [Recstu Inc.](https://appshunter.io/developer/495129203) | [Kazuhiro Higuchi](https://appshunter.io/developer/1887293944) |

## What reviewers say

### 母子手帳＋パパ  ママと赤ちゃんの健康管理

[App page](https://appshunter.io/ios/app/id756841885)

This app allows parents to digitally manage their child's health records, including check-up results and ultrasound photos. It also functions as a growth diary and a tool to track baby gifts and thank-you notes. The app is designed for easy sharing between parents and supports multiple children.

**Highlights:** Digital mother and child handbook management, Record check-up results and ultrasound photos, Share health records with partner, Track growth with automatic charts, Manage baby gifts and thank-you notes, Support for up to 5 children

**Features:** macOS Compatibility

**In-app purchases:** none


### 酸素ボンベの残量計算 / O2Calc

[App page](https://appshunter.io/ios/app/o2calc/id6765861239)

This medical utility app assists healthcare professionals with critical oxygen management calculations. It offers features like oxygen remaining time estimation, FiO2 calculation, and pressure unit conversion, all within a clean, ad-free, and offline-capable interface.

**Highlights:** Oxygen remaining time calculation, FiO2 estimation by device, Pressure unit conversion, 3-stage abnormal value alerts, Double-check screen, Independent dark mode, Live Activities & Dynamic Island integration

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

**In-app purchases:** none


## Frequently asked questions

### Is 母子手帳＋パパ  ママと赤ちゃんの健康管理 free?

母子手帳＋パパ  ママと赤ちゃんの健康管理 is free to download, with no in-app purchases.

### Is 酸素ボンベの残量計算 / O2Calc free?

酸素ボンベの残量計算 / O2Calc is free to download, with no in-app purchases.

### Do 母子手帳＋パパ  ママと赤ちゃんの健康管理 or 酸素ボンベの残量計算 / O2Calc have ads?

母子手帳＋パパ  ママと赤ちゃんの健康管理 shows ads; 酸素ボンベの残量計算 / O2Calc does not.

### Which is updated more often, 母子手帳＋パパ  ママと赤ちゃんの健康管理 or 酸素ボンベの残量計算 / O2Calc?

母子手帳＋パパ  ママと赤ちゃんの健康管理 ships an update every 4 months, and 酸素ボンベの残量計算 / O2Calc every 6 weeks. Most recently, 母子手帳＋パパ  ママと赤ちゃんの健康管理 was updated on October 4, 2026 and 酸素ボンベの残量計算 / O2Calc on October 8, 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.*