# Gengou vs HachiCalendar2 Pro

The clearest difference is in-app purchases: Gengou at none against HachiCalendar2 Pro's 2. Gengou also leads on rating (3.8 vs 3.5) and review sentiment (66% vs 50%). HachiCalendar2 Pro's advantage is update cadence (fortnightly vs every 30 months) and ratings volume (23 vs 4). On ads, device support and iOS requirement there is nothing between them.

Gengou costs $0.99 and HachiCalendar2 Pro $1.99 up front. HachiCalendar2 Pro sells 2 one-off in-app purchases. Gengou asks for nothing beyond the download.

Gengou holds the better App Store score, 3.8 against 3.5. That said, the two scores are not equally well evidenced: HachiCalendar2 Pro has 23 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 66% of Gengou's written reviews are positive against 50% of HachiCalendar2 Pro's.

Gengou ships an update every 30 months, HachiCalendar2 Pro fortnightly. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Gengou | HachiCalendar2 Pro |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/gengou/id288968943/reviews)** | [3.5 (23 ratings)](https://appshunter.io/ios/app/hachicalendar2-pro/id380105927/reviews) |
| Number of ratings | 4 | **23** |
| Positive reviews | **66.1% of reviews** | 49.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 30 months | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3 MB | 43 MB |
| Requires iOS | **15.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Masayuki Akamatsu](https://appshunter.io/developer/284722836) | [加明 严](https://appshunter.io/developer/372968860) |

## 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


### HachiCalendar2 Pro

[App page](https://appshunter.io/ios/app/hachicalendar2-pro/id380105927)

This app combines calendar, to-do lists, and an AI assistant for seamless organization. Manage events as tasks, utilize AI for scheduling, and keep key dates visible with floating countdown cards. It offers detailed time insights and supports multiple calendar systems.

**Highlights:** Infinite vertical scrolling, Events as to-dos, Integrated AI assistant, Floating countdown cards, Time insights & analytics, Quick voice input, Gregorian/Lunar calendar support

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| New Year Theme Pack | $1.99 | one-time |
| Weather Theme Pack | $2.99 | one-time |


## Frequently asked questions

### Is Gengou free?

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

### Is HachiCalendar2 Pro free?

HachiCalendar2 Pro costs $1.99, and also offers in-app purchases.

### Which has better reviews, Gengou or HachiCalendar2 Pro?

Gengou is rated higher. Gengou averages 3.8 out of 5 from 4 ratings, while HachiCalendar2 Pro averages 3.5 from 23 ratings.

### Do Gengou or HachiCalendar2 Pro have ads?

Neither Gengou nor HachiCalendar2 Pro shows ads.

### Which is updated more often, Gengou or HachiCalendar2 Pro?

Gengou ships an update every 30 months, and HachiCalendar2 Pro fortnightly. Most recently, Gengou was updated on October 26, 2026 and HachiCalendar2 Pro on October 25, 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.*