# C vs 連絡アプリ

The clearest difference is update cadence: C at every 10 days against 連絡アプリ's every 3 months. C also leads on review sentiment (25% vs 0%). 連絡アプリ's advantage is iOS requirement (12.0 vs 15.0). On price, ads, 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.

C ships an update every 10 days, 連絡アプリ every 3 months. The most recent releases landed on October 13, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | C | 連絡アプリ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **25.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 months |
| Monetization | Free | — |
| Size | 45 MB | 80 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Netman. Co.,Ltd.](https://appshunter.io/developer/1097455605) | [SPRIX Inc.](https://appshunter.io/developer/625692678) |

## What reviewers say

### C

[App page](https://appshunter.io/ios/app/c-learning-for-parent/id1508699631)

This app facilitates communication between parents, schools, and teachers. Parents can monitor their child's class progress, attendance, and submit absence notifications. It also allows for reporting temperatures and learning times.

**Highlights:** School and teacher communication, Attendance status check, Parental absence registration, Temperature and learning time reporting, Class progress monitoring

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

**In-app purchases:** none


### 連絡アプリ

[App page](https://appshunter.io/ios/app/id6459855072)

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

**In-app purchases:** none


## Frequently asked questions

### Is C free?

C is free to download, with no in-app purchases.

### Is 連絡アプリ free?

連絡アプリ is free to download, with no in-app purchases.

### Do C or 連絡アプリ have ads?

Neither C nor 連絡アプリ shows ads.

### Which is updated more often, C or 連絡アプリ?

C ships an update every 10 days, and 連絡アプリ every 3 months. Most recently, C was updated on October 13, 2026 and 連絡アプリ on October 27, 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.*