# Engineering Survey Calculator vs Catenary Cables

The clearest difference is price: Catenary Cables at Free against Engineering Survey Calculator's $2.99. Catenary Cables also leads on update cadence (every 2 months vs every 24 months) and ratings volume (6 vs 1). Engineering Survey Calculator's advantage is in-app purchases (none vs 2). On rating, ads, device support and iOS requirement there is nothing between them.

Catenary Cables is free to download; Engineering Survey Calculator costs $2.99 up front. Catenary Cables sells 2 in-app purchases, starting at $59.99 per month. Engineering Survey Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Engineering Survey Calculator against 5.0 for Catenary Cables. That said, the two scores are not equally well evidenced: Catenary Cables has 6 ratings behind it against 1, so its average is the more settled of the two.

Engineering Survey Calculator ships an update every 24 months, Catenary Cables every 2 months. The most recent releases landed on September 18, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Engineering Survey Calculator | Catenary Cables |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/engineering-survey-calculator/id641965073/reviews) | [5.0 (6 ratings)](https://appshunter.io/ios/app/catenary-cables/id6447140970/reviews) |
| Number of ratings | 1 | **6** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 2 months** |
| Monetization | **Paid** | Subscription |
| Size | 6 MB | 31 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Logan Copenhaver](https://appshunter.io/developer/1680415210) |

## What reviewers say

### Engineering Survey Calculator

[App page](https://appshunter.io/ios/app/engineering-survey-calculator/id641965073)

This app provides 33 essential calculators for surveying, measurement, and civil engineering tasks. It supports both Imperial (USCS) and Metric (SI) units, making it a versatile tool for engineers and surveyors on iOS devices.

**Highlights:** 33 specialized calculators, Surveying and measurement tools, Civil engineering parameters, Imperial (USCS) and Metric (SI) units, Available for iPhone and iPad

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

**In-app purchases:** none


### Catenary Cables

[App page](https://appshunter.io/ios/app/catenary-cables/id6447140970)

This app provides a more accurate and efficient method for calculating the sagging of overhead transmission line conductors. It replaces traditional approximate parabolic equations with precise catenary expressions, saving time and improving accuracy.

**Highlights:** Accurate sag calculations, Precise catenary expressions, Replaces traditional methods, Flexible transit setup, Time-saving efficiency

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $59.99 | per month |
| Yearly | $539.99 | per year |


## Frequently asked questions

### Is Engineering Survey Calculator free?

Engineering Survey Calculator costs $2.99, with no in-app purchases.

### Is Catenary Cables free?

Catenary Cables is free to download, with in-app purchases available.

### Which has better reviews, Engineering Survey Calculator or Catenary Cables?

Engineering Survey Calculator and Catenary Cables are both rated 5.0 out of 5 on the App Store, from 1 and 6 ratings respectively.

### Do Engineering Survey Calculator or Catenary Cables have ads?

Neither Engineering Survey Calculator nor Catenary Cables shows ads.

### Which is updated more often, Engineering Survey Calculator or Catenary Cables?

Engineering Survey Calculator ships an update every 24 months, and Catenary Cables every 2 months. Most recently, Engineering Survey Calculator was updated on September 18, 2026 and Catenary Cables on September 8, 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.*