# Civil Engineering Calculators vs Simplex Optima

The clearest difference is price: Simplex Optima at $2.99 against Civil Engineering Calculators's $19.99. Simplex Optima also leads on update cadence (every 5 days vs every 14 months) and iOS requirement (13.3 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

Civil Engineering Calculators costs $19.99 and Simplex Optima $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Civil Engineering Calculators ships an update every 14 months, Simplex Optima every 5 days. The most recent releases landed on September 5, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Civil Engineering Calculators | Simplex Optima |
| --- | --- | --- |
| Price | $19.99 | **$2.99** |
| Rating | **[4.8 (12 ratings)](https://appshunter.io/ios/app/civil-engineering-calculators/id673068400/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 5 days** |
| Monetization | Paid | — |
| Size | 39 MB | 2 MB |
| Requires iOS | 16.0 | **13.3** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Konstantinos Ladiellis](https://appshunter.io/developer/1516103440) |

## What reviewers say

### Civil Engineering Calculators

[App page](https://appshunter.io/ios/app/civil-engineering-calculators/id673068400)

This comprehensive tool offers over 480 calculators and converters for civil engineering disciplines. It supports both Metric and Imperial units, covering structural, concrete, hydraulics, soil, and more. Designed for professionals and students, it provides an all-in-one solution for complex calculations.

**Highlights:** 484+ calculators and converters, SI and USCS unit support, Structural engineering tools, Concrete engineering calculations, Hydraulics and waterworks formulas, Soil and earthwork analysis, Unit conversion tools

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

**In-app purchases:** none


### Simplex Optima

[App page](https://appshunter.io/ios/app/simplex-optima/id1667878232)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Civil Engineering Calculators free?

Civil Engineering Calculators costs $19.99, with no in-app purchases.

### Is Simplex Optima free?

Simplex Optima costs $2.99, with no in-app purchases.

### Do Civil Engineering Calculators or Simplex Optima have ads?

Neither Civil Engineering Calculators nor Simplex Optima shows ads.

### Which is updated more often, Civil Engineering Calculators or Simplex Optima?

Civil Engineering Calculators ships an update every 14 months, and Simplex Optima every 5 days. Most recently, Civil Engineering Calculators was updated on September 5, 2026 and Simplex Optima on September 10, 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.*