# 勾配電卓 vs 工事写真V2

The clearest difference is update cadence: 工事写真V2 at every 5 days against 勾配電卓's every 45 months. 工事写真V2 also leads on iOS requirement (14.0.0 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.

勾配電卓 ships an update every 45 months, 工事写真V2 every 5 days. The most recent releases landed on September 10, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | 勾配電卓 | 工事写真V2 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 45 months | **Every 5 days** |
| Size | 1 MB | 120 MB |
| Requires iOS | 17.0 | **14.0.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Takahiro Miyashita](https://appshunter.io/developer/1493701742) | [Booth](https://appshunter.io/developer/415450674) |

## What reviewers say

### 勾配電卓

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

**Features:** macOS Compatibility

**In-app purchases:** none


### 工事写真V2

[App page](https://appshunter.io/ios/app/v2/id6759694047)

**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 工事写真V2 free?

工事写真V2 is free to download, with no in-app purchases.

### Which is updated more often, 勾配電卓 or 工事写真V2?

勾配電卓 ships an update every 45 months, and 工事写真V2 every 5 days. Most recently, 勾配電卓 was updated on September 10, 2026 and 工事写真V2 on September 18, 2026.

---

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