# 学習時間積算計 vs Doushi Master

The clearest difference is ads: 学習時間積算計 at none against Doushi Master's shown. Doushi Master's advantage is update cadence (every 23 months vs every 51 months). On price, in-app purchases, device support and iOS requirement 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, Doushi Master every 23 months. The most recent releases landed on November 2, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | 学習時間積算計 | Doushi Master |
| --- | --- | --- |
| 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** | Yes |
| Update frequency | Every 51 months | **Every 23 months** |
| Size | 108 MB | 47 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [masaki murayama](https://appshunter.io/developer/1275927862) | [Japality Limited](https://appshunter.io/developer/1574046707) |

## 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


### Doushi Master

[App page](https://appshunter.io/ios/app/doushi-master-language-lessons/id1599123995)

**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 Doushi Master free?

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

### Do 学習時間積算計 or Doushi Master have ads?

Doushi Master shows ads; 学習時間積算計 does not.

### Which is updated more often, 学習時間積算計 or Doushi Master?

学習時間積算計 ships an update every 51 months, and Doushi Master every 23 months. Most recently, 学習時間積算計 was updated on November 2, 2026 and Doushi Master on October 3, 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.*