# Structural Engineering lite vs Mechanical Engg. Calculator

The clearest difference is rating: Structural Engineering lite at 4.2 against Mechanical Engg. Calculator's 3.7. Structural Engineering lite also leads on review sentiment (60% vs 25%) and update cadence (every 6 months vs every 21 months). Mechanical Engg. Calculator's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support there is nothing between them.

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

Structural Engineering lite holds the better App Store score, 4.2 against 3.7. That said, the two scores are not equally well evidenced: Structural Engineering lite has 19 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 60% of Structural Engineering lite's written reviews are positive against 25% of Mechanical Engg. Calculator's.

Structural Engineering lite ships an update every 6 months, Mechanical Engg. Calculator every 21 months. The most recent releases landed on September 18, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Structural Engineering lite | Mechanical Engg. Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (19 ratings)](https://appshunter.io/ios/app/structural-engineering-lite/id638690043/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/mechanical-engg-calculator/id1100129593/reviews) |
| Number of ratings | **19** | 3 |
| Positive reviews | **60.0% of reviews** | 25.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 months** | Every 21 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 6 MB | 24 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Trelleborg Sealing Solutions](https://appshunter.io/developer/396863758) |

## 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 |


### Mechanical Engg. Calculator

[App page](https://appshunter.io/ios/app/mechanical-engg-calculator/id1100129593)

This app provides a comprehensive collection of ~250 formulas across 16 categories for mechanical engineering, physics, and mathematics. Users can easily perform calculations by selecting a formula and inputting variables.

**Highlights:** ~250 formulas, 16 categories, Mathematics, physics, mechanical engineering, User-friendly calculation input, Customizable for convenience

**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 Mechanical Engg. Calculator free?

Mechanical Engg. Calculator is free to download, with no in-app purchases.

### Which has better reviews, Structural Engineering lite or Mechanical Engg. Calculator?

Structural Engineering lite is rated higher. Structural Engineering lite averages 4.2 out of 5 from 19 ratings, while Mechanical Engg. Calculator averages 3.7 from 3 ratings.

### Do Structural Engineering lite or Mechanical Engg. Calculator have ads?

Structural Engineering lite shows ads; Mechanical Engg. Calculator does not.

### Which is updated more often, Structural Engineering lite or Mechanical Engg. Calculator?

Structural Engineering lite ships an update every 6 months, and Mechanical Engg. Calculator every 21 months. Most recently, Structural Engineering lite was updated on September 18, 2026 and Mechanical Engg. Calculator on June 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.*