# 年号電卓Plus vs Radix Converte

The clearest difference is review sentiment: Radix Converte at 100% against 年号電卓Plus's 38%. 年号電卓Plus's advantage is ads (none vs shown) and update cadence (every 6 weeks vs every 9 months). 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.

年号電卓Plus ships an update every 6 weeks, Radix Converte every 9 months. The most recent releases landed on July 27, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | 年号電卓Plus | Radix Converte |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 37.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 6 weeks** | Every 9 months |
| Monetization | **Free** | Ad-supported |
| Size | 7 MB | 7 MB |
| Requires iOS | 17.6 | **16.6** |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nakanishi Toshihiko](https://appshunter.io/developer/712843914) | [Kota Maeda](https://appshunter.io/developer/1575165482) |

## 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


### Radix Converte

[App page](https://appshunter.io/ios/app/radix-converte/id1581706168)

Easily convert numbers between different bases. Offers a simple mode for common conversions and a pro mode for advanced bases up to 36. Results can be copied with a single tap.

**Highlights:** Simple Mode for common bases, Pro Mode for bases 2-36, Tap to copy results, Ad-supported, Free to use

**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 Radix Converte free?

Radix Converte is free to download, with no in-app purchases.

### Do 年号電卓Plus or Radix Converte have ads?

Radix Converte shows ads; 年号電卓Plus does not.

### Which is updated more often, 年号電卓Plus or Radix Converte?

年号電卓Plus ships an update every 6 weeks, and Radix Converte every 9 months. Most recently, 年号電卓Plus was updated on July 27, 2026 and Radix Converte on September 14, 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.*