# AreaCalculator byNSDev vs 勾配電卓

The clearest difference is update cadence: AreaCalculator byNSDev at every 13 months against 勾配電卓's every 45 months. AreaCalculator byNSDev also leads on iOS requirement (12.0 vs 17.0). On price, 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.

AreaCalculator byNSDev ships an update every 13 months, 勾配電卓 every 45 months. Both last shipped on September 10, 2026.

## The numbers

| Metric | AreaCalculator byNSDev | 勾配電卓 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | **Every 13 months** | Every 45 months |
| Monetization | Free | — |
| Size | 13 MB | 1 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NIHON SYSTEM DEVELOPER CORPORATION](https://appshunter.io/developer/1198103734) | [Takahiro Miyashita](https://appshunter.io/developer/1493701742) |

## What reviewers say

### AreaCalculator byNSDev

[App page](https://appshunter.io/ios/app/areacalculator-bynsdev/id1214895582)

Calculate the area of 58 different shapes, including polygons, circles, ellipses, and parabolas. Input side lengths and angles for accurate measurements. Request new features for future updates.

**Highlights:** Calculate area of 58 shapes, Supports triangles, squares, polygons, Calculates circles, ellipses, pies, Handles arcs and parabolic areas, Input side lengths and angles, Feature request functionality

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

**In-app purchases:** none


### 勾配電卓

[App page](https://appshunter.io/ios/app/1x/id1493701743)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AreaCalculator byNSDev free?

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

### Is 勾配電卓 free?

勾配電卓 is free to download, with no in-app purchases.

### Which is updated more often, AreaCalculator byNSDev or 勾配電卓?

AreaCalculator byNSDev ships an update every 13 months, and 勾配電卓 every 45 months. Most recently, AreaCalculator byNSDev was updated on September 10, 2026 and 勾配電卓 on September 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*