# おぢばコンパス vs 年号電卓Plus

The clearest difference is update cadence: おぢばコンパス at every 3 days against 年号電卓Plus's every 6 weeks. おぢばコンパス also leads on 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.

おぢばコンパス ships an update every 3 days, 年号電卓Plus every 6 weeks. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | おぢばコンパス | 年号電卓Plus |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 37.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 6 weeks |
| Monetization | — | Free |
| Size | 16 MB | 7 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Suits](https://appshunter.io/developer/511704647) | [Nakanishi Toshihiko](https://appshunter.io/developer/712843914) |

## What reviewers say

### おぢばコンパス

[App page](https://appshunter.io/ios/app/id1319028123)

**Features:** macOS Compatibility

**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 おぢばコンパス free?

おぢばコンパス 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 おぢばコンパス or 年号電卓Plus have ads?

Neither おぢばコンパス nor 年号電卓Plus shows ads.

### Which is updated more often, おぢばコンパス or 年号電卓Plus?

おぢばコンパス ships an update every 3 days, and 年号電卓Plus every 6 weeks. Most recently, おぢばコンパス was updated on October 19, 2026 and 年号電卓Plus on October 24, 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.*