# 年号電卓Plus vs x123 (xリンク)

The clearest difference is update cadence: x123 (xリンク) at every 2 days against 年号電卓Plus's every 6 weeks. x123 (xリンク) also leads on iOS requirement (15.6 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, x123 (xリンク) every 2 days. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 年号電卓Plus | x123 (xリンク) |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Monetization | Free | — |
| Size | 7 MB | 4 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nakanishi Toshihiko](https://appshunter.io/developer/712843914) | [FULLDRIVE K.K.](https://appshunter.io/developer/1762991279) |

## 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


### x123 (xリンク)

[App page](https://appshunter.io/ios/app/x123-x/id6639588205)

**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 x123 (xリンク) free?

x123 (xリンク) is free to download, with no in-app purchases.

### Do 年号電卓Plus or x123 (xリンク) have ads?

Neither 年号電卓Plus nor x123 (xリンク) shows ads.

### Which is updated more often, 年号電卓Plus or x123 (xリンク)?

年号電卓Plus ships an update every 6 weeks, and x123 (xリンク) every 2 days. Most recently, 年号電卓Plus was updated on October 12, 2026 and x123 (xリンク) on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*