# Structural Engineering Calc. vs GCTS gTest

The clearest difference is price: GCTS gTest at Free against Structural Engineering Calc.'s $5.99. GCTS gTest also leads on update cadence (every 3 weeks vs every 10 months) and iOS requirement (14.2 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

GCTS gTest is free to download; Structural Engineering Calc. costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Structural Engineering Calc. ships an update every 10 months, GCTS gTest every 3 weeks. The most recent releases landed on September 18, 2026 and August 12, 2026 respectively.

## The numbers

| Metric | Structural Engineering Calc. | GCTS gTest |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | **[4.5 (20 ratings)](https://appshunter.io/ios/app/structural-engineering-calc/id590507987/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 6 MB | 144 MB |
| Requires iOS | 17.6 | **14.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [GCTS Testing Systems](https://appshunter.io/developer/539767606) |

## What reviewers say

### Structural Engineering Calc.

[App page](https://appshunter.io/ios/app/structural-engineering-calc/id590507987)

This app provides 59 essential structural engineering formulas for columns, beams, base plates, composite beams, and connections. It offers instant demand/capacity checks, a built-in AISC section database, and material references, supporting both USCS and SI units for on-site or office use.

**Highlights:** 59 structural formulas, Instant demand/capacity checks, Built-in AISC section database, Material and code references, USCS & SI unit support, Pass/Fail visual indicators

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

**In-app purchases:** none


### GCTS gTest

[App page](https://appshunter.io/ios/app/gcts-gtest/id1588420445)

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

**In-app purchases:** none


## Frequently asked questions

### Is Structural Engineering Calc. free?

Structural Engineering Calc. costs $5.99, with no in-app purchases.

### Is GCTS gTest free?

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

### Do Structural Engineering Calc. or GCTS gTest have ads?

Neither Structural Engineering Calc. nor GCTS gTest shows ads.

### Which is updated more often, Structural Engineering Calc. or GCTS gTest?

Structural Engineering Calc. ships an update every 10 months, and GCTS gTest every 3 weeks. Most recently, Structural Engineering Calc. was updated on September 18, 2026 and GCTS gTest on August 12, 2026.

---

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