# 勾配電卓 vs 土質ボーリング柱状図作成

The clearest difference is update cadence: 土質ボーリング柱状図作成 at every 2 months against 勾配電卓's every 45 months. 勾配電卓's advantage is device support (3 vs 1). On price, in-app purchases and iOS requirement there is nothing between them.

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

勾配電卓 ships an update every 45 months, 土質ボーリング柱状図作成 every 2 months. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | 勾配電卓 | 土質ボーリング柱状図作成 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | Yes |
| Update frequency | Every 45 months | **Every 2 months** |
| Size | 1 MB | 16 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Takahiro Miyashita](https://appshunter.io/developer/1493701742) | [Tadao Nishijima](https://appshunter.io/developer/1781695989) |

## What reviewers say

### 勾配電卓

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

**Features:** macOS Compatibility

**In-app purchases:** none


### 土質ボーリング柱状図作成

[App page](https://appshunter.io/ios/app/id6741353167)

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

**In-app purchases:** none


## Frequently asked questions

### Is 勾配電卓 free?

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

### Is 土質ボーリング柱状図作成 free?

土質ボーリング柱状図作成 is free to download, with no in-app purchases.

### Which is updated more often, 勾配電卓 or 土質ボーリング柱状図作成?

勾配電卓 ships an update every 45 months, and 土質ボーリング柱状図作成 every 2 months. Most recently, 勾配電卓 was updated on October 14, 2026 and 土質ボーリング柱状図作成 on October 11, 2026.

---

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