# Gengou vs Houji

The clearest difference is update cadence: Houji at every 7 months against Gengou's every 42 months. Gengou's advantage is device support (3 vs 1) and price ($0.99 vs $1.99). On ads and in-app purchases there is nothing between them.

Gengou costs $0.99 and Houji $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Gengou ships an update every 42 months, Houji every 7 months. The most recent releases landed on September 26, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Gengou | Houji |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/gengou/id288968943/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 66.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 42 months | **Every 7 months** |
| Monetization | Paid | — |
| Size | 3 MB | 4 MB |
| Requires iOS | **13.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Masayuki Akamatsu](https://appshunter.io/developer/284722836) | [her0.jp](https://appshunter.io/developer/482918302) |

## What reviewers say

### Gengou

[App page](https://appshunter.io/ios/app/gengou/id288968943)

Quickly convert between Japanese era names and Christian era years. Features include era and year searches, period and era pickers, and the ability to display text in Japanese or English.

**Highlights:** Era and Year Search, Period Picker, Era Picker, Christian Era Year Picker, Japanese Era Year Picker, Show This Year Button, Dual Language Support (JP/EN)

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

**In-app purchases:** none


### Houji

[App page](https://appshunter.io/ios/app/houji/id482918299)

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

**In-app purchases:** none


## Frequently asked questions

### Is Gengou free?

Gengou costs $0.99, with no in-app purchases.

### Is Houji free?

Houji costs $1.99, with no in-app purchases.

### Do Gengou or Houji have ads?

Neither Gengou nor Houji shows ads.

### Which is updated more often, Gengou or Houji?

Gengou ships an update every 42 months, and Houji every 7 months. Most recently, Gengou was updated on September 26, 2026 and Houji on September 22, 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.*