# 和暦計算 vs 年号電卓Plus

The clearest difference is ads: 年号電卓Plus at none against 和暦計算's shown. 年号電卓Plus also leads on update cadence (every 6 weeks vs every 6 months). 和暦計算's advantage is review sentiment (67% vs 38%). 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.

和暦計算 ships an update every 6 months, 年号電卓Plus every 6 weeks. The most recent releases landed on September 7, 2026 and July 27, 2026 respectively.

## The numbers

| Metric | 和暦計算 | 年号電卓Plus |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **66.7% of reviews** | 37.5% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 7 MB | 7 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Takashi Shinyashiki](https://appshunter.io/developer/1235395472) | [Nakanishi Toshihiko](https://appshunter.io/developer/712843914) |

## What reviewers say

### 和暦計算

[App page](https://appshunter.io/ios/app/id1235395473)

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

**In-app purchases:** none


### 年号電卓Plus

[App page](https://appshunter.io/ios/app/plus/id1320583340)

Easily convert between Western and Japanese eras, and determine birth years from age. Explore historical context with explanations for era changes and significant events of each year.

**Highlights:** Western to Japanese era conversion, Japanese era to Western conversion, Calculate birth year from age, View era start and end dates, Understand reasons for era changes, Discover major events of each year

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

**In-app purchases:** none


## Frequently asked questions

### Is 和暦計算 free?

和暦計算 is free to download, with no in-app purchases.

### Is 年号電卓Plus free?

年号電卓Plus is free to download, with no in-app purchases.

### Do 和暦計算 or 年号電卓Plus have ads?

和暦計算 shows ads; 年号電卓Plus does not.

### Which is updated more often, 和暦計算 or 年号電卓Plus?

和暦計算 ships an update every 6 months, and 年号電卓Plus every 6 weeks. Most recently, 和暦計算 was updated on September 7, 2026 and 年号電卓Plus on July 27, 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.*