# e vs 変数電卓+

The clearest difference is update cadence: 変数電卓+ at daily against e's every 5 months. e's advantage is iOS requirement (6.1 vs 12.0). 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.

e ships an update every 5 months, 変数電卓+ daily. Both last shipped on October 5, 2026.

## The numbers

| Metric | e | 変数電卓+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/e-calcfree/id591591892/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Daily** |
| Monetization | Free | — |
| Size | 7 MB | 27 MB |
| Requires iOS | **6.1** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [e-skett Corp.](https://appshunter.io/developer/591591895) | [Takuya Nemoto](https://appshunter.io/developer/1817950976) |

## What reviewers say

### e

[App page](https://appshunter.io/ios/app/e-calcfree/id591591892)

This scientific calculator supports engineering notation with prefixes like pico, nano, and mega. It offers a history feature to review past calculations and allows editing of formulas for recalculation. The free version has some limitations on history scrolling and saving.

**Highlights:** Scientific notation support, Engineering multipliers (p, n, u, m, k, M), History of past calculations, Editable formulas for recalculation, Unit conversion for engineering prefixes

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 変数電卓+

[App page](https://appshunter.io/ios/app/plus/id6746694817)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is e free?

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

### Is 変数電卓+ free?

変数電卓+ is free to download, with no in-app purchases.

### Do e or 変数電卓+ have ads?

Neither e nor 変数電卓+ shows ads.

### Which is updated more often, e or 変数電卓+?

e ships an update every 5 months, and 変数電卓+ daily. Most recently, e was updated on October 5, 2026 and 変数電卓+ on October 5, 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.*