# Structural Engineering lite vs rInspector

The clearest difference is in-app purchases: rInspector at none against Structural Engineering lite's 1. rInspector also leads on ads (none vs shown) and iOS requirement (12.0 vs 17.6). On price, update cadence and device support there is nothing between them.

Both are free to download. Structural Engineering lite sells 1 one-off in-app purchase. rInspector asks for nothing beyond the download.

Structural Engineering lite ships an update every 6 months, rInspector every 5 months. The most recent releases landed on September 18, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Structural Engineering lite | rInspector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (19 ratings)](https://appshunter.io/ios/app/structural-engineering-lite/id638690043/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 5 months** |
| Monetization | Free with in-app purchases | — |
| Size | 6 MB | 5 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Rival Solutions Inc.](https://appshunter.io/developer/968766793) |

## What reviewers say

### Structural Engineering lite

[App page](https://appshunter.io/ios/app/structural-engineering-lite/id638690043)

This app provides engineers with essential structural formulas and calculations for civil construction projects. It offers instant results, demand/capacity checks, and a built-in database of materials and sections, all accessible on mobile devices.

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

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Structural Engineering Calc. | $5.99 | one-time |


### rInspector

[App page](https://appshunter.io/ios/app/rinspector/id972750175)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Structural Engineering lite free?

Structural Engineering lite is free to download, with in-app purchases available.

### Is rInspector free?

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

### Do Structural Engineering lite or rInspector have ads?

Structural Engineering lite shows ads; rInspector does not.

### Which is updated more often, Structural Engineering lite or rInspector?

Structural Engineering lite ships an update every 6 months, and rInspector every 5 months. Most recently, Structural Engineering lite was updated on September 18, 2026 and rInspector on September 9, 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.*