# けいさんや 日常計算集 vs Re

The clearest difference is in-app purchases: けいさんや 日常計算集 at none against Re's 1. けいさんや 日常計算集 also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.6). Re's advantage is ads (none vs shown) and update cadence (every 6 days vs every 3 weeks). On price there is nothing between them.

Both are free to download. Re sells 1 one-off in-app purchase. けいさんや 日常計算集 asks for nothing beyond the download.

けいさんや 日常計算集 ships an update every 3 weeks, Re every 6 days. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | けいさんや 日常計算集 | Re |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Size | 26 MB | 24 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [oka yamazaki](https://appshunter.io/developer/1152231583) | [Kotaro Kitazawa](https://appshunter.io/developer/1887708490) |

## What reviewers say

### けいさんや 日常計算集

[App page](https://appshunter.io/ios/app/id1492215482)

**Features:** macOS Compatibility

**In-app purchases:** none


### Re

[App page](https://appshunter.io/ios/app/replan/id6761083401)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $24.99 | one-time |


## Frequently asked questions

### Is けいさんや 日常計算集 free?

けいさんや 日常計算集 is free to download, with no in-app purchases.

### Is Re free?

Re is free to download, with in-app purchases available.

### Do けいさんや 日常計算集 or Re have ads?

けいさんや 日常計算集 shows ads; Re does not.

### Which is updated more often, けいさんや 日常計算集 or Re?

けいさんや 日常計算集 ships an update every 3 weeks, and Re every 6 days. Most recently, けいさんや 日常計算集 was updated on October 10, 2026 and Re on October 7, 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.*