# Old Japanese Clock vs AKEMUTSU

The clearest difference is price: AKEMUTSU at Free against Old Japanese Clock's $3.99. AKEMUTSU also leads on update cadence (daily vs every 4 months). Old Japanese Clock's advantage is iOS requirement (15.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

AKEMUTSU is free to download; Old Japanese Clock costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Old Japanese Clock ships an update every 4 months, AKEMUTSU daily. The most recent releases landed on October 26, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Old Japanese Clock | AKEMUTSU |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/old-japanese-clock/id852909242/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Daily** |
| Monetization | Paid | — |
| Size | 9 MB | 60 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Takafumi AMANO](https://appshunter.io/developer/581065340) | [Shoya Inoue](https://appshunter.io/developer/1881641456) |

## What reviewers say

### Old Japanese Clock

[App page](https://appshunter.io/ios/app/old-japanese-clock/id852909242)

Convert between modern and historical Japanese timekeeping systems. Explore fixed and temporal hour systems used from the Nara to Edo eras. Useful for historical document analysis and recreating ancient Japanese lifestyles.

**Highlights:** Converts between modern and old Japanese time, Fixed hour system with six types, Temporal hour system with seven types, Supports Engishiki, Guchureki, and more, Useful for historical document analysis, Aids in adjusting Japanese clocks (Wadokei)

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

**In-app purchases:** none


### AKEMUTSU

[App page](https://appshunter.io/ios/app/akemutsu/id6759918180)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Old Japanese Clock free?

Old Japanese Clock costs $3.99, with no in-app purchases.

### Is AKEMUTSU free?

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

### Do Old Japanese Clock or AKEMUTSU have ads?

Neither Old Japanese Clock nor AKEMUTSU shows ads.

### Which is updated more often, Old Japanese Clock or AKEMUTSU?

Old Japanese Clock ships an update every 4 months, and AKEMUTSU daily. Most recently, Old Japanese Clock was updated on October 26, 2026 and AKEMUTSU on October 15, 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.*