# 年号電卓Plus vs なろう更新チェッカー

The clearest difference is update cadence: 年号電卓Plus at every 6 weeks against なろう更新チェッカー's every 3 months. なろう更新チェッカー's advantage is iOS requirement (15.0 vs 17.6). On price, ads, 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, なろう更新チェッカー every 3 months. The most recent releases landed on September 27, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 年号電卓Plus | なろう更新チェッカー |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free | — |
| Size | 7 MB | 10 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nakanishi Toshihiko](https://appshunter.io/developer/712843914) | [Mitsutoshi Shibuya](https://appshunter.io/developer/1441785236) |

## 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


### なろう更新チェッカー

[App page](https://appshunter.io/ios/app/id1549362000)

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

**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 なろう更新チェッカー free?

なろう更新チェッカー is free to download, with no in-app purchases.

### Do 年号電卓Plus or なろう更新チェッカー have ads?

Neither 年号電卓Plus nor なろう更新チェッカー shows ads.

### Which is updated more often, 年号電卓Plus or なろう更新チェッカー?

年号電卓Plus ships an update every 6 weeks, and なろう更新チェッカー every 3 months. Most recently, 年号電卓Plus was updated on September 27, 2026 and なろう更新チェッカー on October 2, 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.*