# けいさんや 日常計算集 vs OneTapNote

The clearest difference is iOS requirement: けいさんや 日常計算集 at 13.0 against OneTapNote's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

けいさんや 日常計算集 ships an update every 3 weeks, OneTapNote monthly. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | けいさんや 日常計算集 | OneTapNote |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 26 MB | 43 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [oka yamazaki](https://appshunter.io/developer/1152231583) | [Mami Takata](https://appshunter.io/developer/1629198536) |

## 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


### OneTapNote

[App page](https://appshunter.io/ios/app/onetapnote/id1636194574)

**Features:** macOS Compatibility

**In-app purchases:** none


## 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 OneTapNote free?

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

### Do けいさんや 日常計算集 or OneTapNote have ads?

Both けいさんや 日常計算集 and OneTapNote show ads.

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

けいさんや 日常計算集 ships an update every 3 weeks, and OneTapNote monthly. Most recently, けいさんや 日常計算集 was updated on October 10, 2026 and OneTapNote on September 30, 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.*