# Smart Construction Quick3D vs 鉄筋電卓 − 重量・定尺・配筋・生コン

The clearest difference is in-app purchases: Smart Construction Quick3D at none against 鉄筋電卓 − 重量・定尺・配筋・生コン's 1. 鉄筋電卓 − 重量・定尺・配筋・生コン's advantage is update cadence (every 2 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 鉄筋電卓 − 重量・定尺・配筋・生コン sells 1 one-off in-app purchase. Smart Construction Quick3D asks for nothing beyond the download.

Smart Construction Quick3D ships an update every 3 weeks, 鉄筋電卓 − 重量・定尺・配筋・生コン every 2 days. The most recent releases landed on September 22, 2026 and September 4, 2026 respectively.

## The numbers

| Metric | Smart Construction Quick3D | 鉄筋電卓 − 重量・定尺・配筋・生コン |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Size | 37 MB | 63 MB |
| Requires iOS | 15.2 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EARTHBRAIN Ltd.](https://appshunter.io/developer/1392320623) | [Moeki Kozawa](https://appshunter.io/developer/1770452138) |

## What reviewers say

### Smart Construction Quick3D

[App page](https://appshunter.io/ios/app/smart-construction-quick3d/id1627645913)

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

**In-app purchases:** none


### 鉄筋電卓 − 重量・定尺・配筋・生コン

[App page](https://appshunter.io/ios/app/id6783316434)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rebar Calc Pro | $4.99 | one-time |


## Frequently asked questions

### Is Smart Construction Quick3D free?

Smart Construction Quick3D is free to download, with no in-app purchases.

### Is 鉄筋電卓 − 重量・定尺・配筋・生コン free?

鉄筋電卓 − 重量・定尺・配筋・生コン is free to download, with in-app purchases available.

### Do Smart Construction Quick3D or 鉄筋電卓 − 重量・定尺・配筋・生コン have ads?

Neither Smart Construction Quick3D nor 鉄筋電卓 − 重量・定尺・配筋・生コン shows ads.

### Which is updated more often, Smart Construction Quick3D or 鉄筋電卓 − 重量・定尺・配筋・生コン?

Smart Construction Quick3D ships an update every 3 weeks, and 鉄筋電卓 − 重量・定尺・配筋・生コン every 2 days. Most recently, Smart Construction Quick3D was updated on September 22, 2026 and 鉄筋電卓 − 重量・定尺・配筋・生コン on September 4, 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.*