# スマホで構造計算 vs DUCTable

The clearest difference is update cadence: DUCTable at every 3 weeks against スマホで構造計算's every 2 months. DUCTable also leads on iOS requirement (13.0 vs 17.0). On price, ads, 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.

スマホで構造計算 ships an update every 2 months, DUCTable every 3 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | スマホで構造計算 | DUCTable |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 4 MB | 9 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [株式会社ストラクチャー](https://appshunter.io/developer/1097429252) | [SHIN NIPPON AIR TECHNOLOGIES CO.,LTD.](https://appshunter.io/developer/1526286874) |

## What reviewers say

### スマホで構造計算

[App page](https://appshunter.io/ios/app/id1172071862)

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

**In-app purchases:** none


### DUCTable

[App page](https://appshunter.io/ios/app/ductable/id1526286872)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is スマホで構造計算 free?

スマホで構造計算 is free to download, with no in-app purchases.

### Is DUCTable free?

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

### Do スマホで構造計算 or DUCTable have ads?

Neither スマホで構造計算 nor DUCTable shows ads.

### Which is updated more often, スマホで構造計算 or DUCTable?

スマホで構造計算 ships an update every 2 months, and DUCTable every 3 weeks. Most recently, スマホで構造計算 was updated on November 2, 2026 and DUCTable on November 3, 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.*