# 年号電卓Plus vs 近代年号変換

The clearest difference is ads: 年号電卓Plus at none against 近代年号変換's shown. 年号電卓Plus also leads on update cadence (every 6 weeks vs every 6 months). 近代年号変換's advantage is iOS requirement (13.0 vs 17.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

年号電卓Plus ships an update every 6 weeks, 近代年号変換 every 6 months. The most recent releases landed on July 27, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | 年号電卓Plus | 近代年号変換 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 6 weeks** | Every 6 months |
| Monetization | Free | — |
| Size | 7 MB | 78 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nakanishi Toshihiko](https://appshunter.io/developer/712843914) | [Masatomo Takano](https://appshunter.io/developer/1479637060) |

## What reviewers say

### 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


### 近代年号変換

[App page](https://appshunter.io/ios/app/id1479637061)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 年号電卓Plus free?

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

### Is 近代年号変換 free?

近代年号変換 is free to download, with no in-app purchases.

### Do 年号電卓Plus or 近代年号変換 have ads?

近代年号変換 shows ads; 年号電卓Plus does not.

### Which is updated more often, 年号電卓Plus or 近代年号変換?

年号電卓Plus ships an update every 6 weeks, and 近代年号変換 every 6 months. Most recently, 年号電卓Plus was updated on July 27, 2026 and 近代年号変換 on September 8, 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.*