# Structural Engineering lite vs Clean Pro

Structural Engineering lite and Clean Pro are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Structural Engineering lite sells 1 one-off in-app purchase and Clean Pro sells 5 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Structural Engineering lite ships an update every 6 months, Clean Pro every 4 months. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Structural Engineering lite | Clean Pro |
| --- | --- | --- |
| 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 | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 months | **Every 4 months** |
| Monetization | Free with in-app purchases | — |
| Size | 6 MB | 26 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [富清 唐](https://appshunter.io/developer/1756172721) |

## 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 |


### Clean Pro

[App page](https://appshunter.io/ios/app/clean-pro-clean-master/id6752538807)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| $4.99 / Week - Auto Renewal | $4.99 | per 7 days |
| $19.99 / 月 - 自动续订 | $19.99 | per month |
| $99.99 / Year - Auto Renewal | $99.99 | per year |
| $0.99 / One-Time Purchase | $0.99 | one-time |
| $99.99 / Lifetime -  one time | $149.99 | one-time |


## Frequently asked questions

### Is Structural Engineering lite free?

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

### Is Clean Pro free?

Clean Pro is free to download, with in-app purchases available.

### Do Structural Engineering lite or Clean Pro have ads?

Both Structural Engineering lite and Clean Pro show ads.

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

Structural Engineering lite ships an update every 6 months, and Clean Pro every 4 months. Most recently, Structural Engineering lite was updated on October 28, 2026 and Clean Pro on October 24, 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.*