# WarikanJ vs R2o式わりかん電卓

The clearest difference is update cadence: R2o式わりかん電卓 at fortnightly against WarikanJ's every 2 months. R2o式わりかん電卓 also leads on iOS requirement (9.0 vs 18.5). 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.

WarikanJ ships an update every 2 months, R2o式わりかん電卓 fortnightly. The most recent releases landed on October 18, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | WarikanJ | R2o式わりかん電卓 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 1 MB | 22 MB |
| Requires iOS | 18.5 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hisako Murata](https://appshunter.io/developer/922077334) | [Atsuo Kazama](https://appshunter.io/developer/1442822891) |

## What reviewers say

### WarikanJ

[App page](https://appshunter.io/ios/app/warikanj/id922077335)

**Features:** macOS Compatibility

**In-app purchases:** none


### R2o式わりかん電卓

[App page](https://appshunter.io/ios/app/r2o/id1442822892)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WarikanJ free?

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

### Is R2o式わりかん電卓 free?

R2o式わりかん電卓 is free to download, with no in-app purchases.

### Do WarikanJ or R2o式わりかん電卓 have ads?

Neither WarikanJ nor R2o式わりかん電卓 shows ads.

### Which is updated more often, WarikanJ or R2o式わりかん電卓?

WarikanJ ships an update every 2 months, and R2o式わりかん電卓 fortnightly. Most recently, WarikanJ was updated on October 18, 2026 and R2o式わりかん電卓 on October 4, 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.*