# スマホで構造計算 vs TriangleS

The clearest difference is price: スマホで構造計算 at Free against TriangleS's $0.99. TriangleS's advantage is iOS requirement (13.0 vs 15.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

スマホで構造計算 is free to download; TriangleS costs $0.99 up front. 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, TriangleS every 4 months. The most recent releases landed on September 10, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | スマホで構造計算 | TriangleS |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Size | 4 MB | 2 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [株式会社ストラクチャー](https://appshunter.io/developer/1097429252) | [ryo sasaki](https://appshunter.io/developer/318552526) |

## What reviewers say

### スマホで構造計算

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

**Features:** macOS Compatibility

**In-app purchases:** none


### TriangleS

[App page](https://appshunter.io/ios/app/triangles/id1572386611)

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

**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 TriangleS free?

TriangleS costs $0.99, with no in-app purchases.

### Do スマホで構造計算 or TriangleS have ads?

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

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

スマホで構造計算 ships an update every 2 months, and TriangleS every 4 months. Most recently, スマホで構造計算 was updated on September 10, 2026 and TriangleS on September 8, 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.*