# 学習時間積算計 vs N4文字

The clearest difference is iOS requirement: 学習時間積算計 at 12.0 against N4文字's 15.2. On price, update cadence, ads and in-app purchases there is nothing between them.

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

学習時間積算計 ships an update every 51 months, N4文字 every 43 months. The most recent releases landed on October 5, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 学習時間積算計 | N4文字 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id1443708258/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 51 months | **Every 43 months** |
| Size | 108 MB | 1 MB |
| Requires iOS | **12.0** | 15.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [masaki murayama](https://appshunter.io/developer/1275927862) | [Cuong Dao](https://appshunter.io/developer/1061414659) |

## What reviewers say

### 学習時間積算計

[App page](https://appshunter.io/ios/app/id1443708258)

**Features:** macOS Compatibility

**In-app purchases:** none


### N4文字

[App page](https://appshunter.io/ios/app/n4/id1475896259)

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

**In-app purchases:** none


## Frequently asked questions

### Is 学習時間積算計 free?

学習時間積算計 is free to download, with no in-app purchases.

### Is N4文字 free?

N4文字 is free to download, with no in-app purchases.

### Do 学習時間積算計 or N4文字 have ads?

Neither 学習時間積算計 nor N4文字 shows ads.

### Which is updated more often, 学習時間積算計 or N4文字?

学習時間積算計 ships an update every 51 months, and N4文字 every 43 months. Most recently, 学習時間積算計 was updated on October 5, 2026 and N4文字 on October 21, 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.*