# Real vs 勾配電卓

The clearest difference is update cadence: Real at every 11 months against 勾配電卓's every 45 months. Real 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.

Real ships an update every 11 months, 勾配電卓 every 45 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Real | 勾配電卓 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | — |
| Update frequency | **Every 11 months** | Every 45 months |
| Monetization | Ad-supported | — |
| Size | 69 MB | 1 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Takeru Yui](https://appshunter.io/developer/955414485) | [Takahiro Miyashita](https://appshunter.io/developer/1493701742) |

## What reviewers say

### Real

[App page](https://appshunter.io/ios/app/real-time-heron-calculator/id955414486)

Calculate the area of a triangle using Heron's formula with real-time graphical updates. Easily adjust side lengths and view results instantly, making it ideal for on-site construction work. Customize decimal places and rounding methods for precise calculations.

**Highlights:** Heron's formula for triangle area, Real-time graphical updates, Intuitive side length adjustment, Customizable decimal places, Multiple rounding options, Ideal for construction sites

**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 Real free?

Real 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, Real or 勾配電卓?

Real ships an update every 11 months, and 勾配電卓 every 45 months. Most recently, Real was updated on November 3, 2026 and 勾配電卓 on November 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.*