# Engineering Survey Calculator vs Ruler with Caliper, Protractor

The clearest difference is price: Ruler with Caliper, Protractor at Free against Engineering Survey Calculator's $2.99. Engineering Survey Calculator's advantage is in-app purchases (none vs 3) and ads (none vs shown). On review sentiment, update cadence, device support and iOS requirement there is nothing between them.

Ruler with Caliper, Protractor is free to download; Engineering Survey Calculator costs $2.99 up front. Ruler with Caliper, Protractor sells 3 in-app purchases, starting at $3.99 per 7 days. Engineering Survey Calculator asks for nothing beyond the download.

Engineering Survey Calculator ships an update every 24 months, Ruler with Caliper, Protractor every 28 months. The most recent releases landed on October 19, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Engineering Survey Calculator | Ruler with Caliper, Protractor |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/engineering-survey-calculator/id641965073/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 24 months** | Every 28 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 6 MB | 6 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) |

## 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


### Ruler with Caliper, Protractor

[App page](https://appshunter.io/ios/app/ruler-with-caliper-protractor/id1368462815)

This app transforms your device into a precise digital measuring tool. It offers accurate measurements for various objects and distances using your camera, with multiple units and offline functionality.

**Highlights:** Accurate measurements via camera, Measure small objects to large distances, User-friendly interface, Multiple measurement units (inches, cm), Virtual ruler on screen, Save and share measurements, Offline accessibility

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| Yearly | $39.99 | per year |
| Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Engineering Survey Calculator free?

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

### Is Ruler with Caliper, Protractor free?

Ruler with Caliper, Protractor is free to download, with in-app purchases available.

### Do Engineering Survey Calculator or Ruler with Caliper, Protractor have ads?

Ruler with Caliper, Protractor shows ads; Engineering Survey Calculator does not.

### Which is updated more often, Engineering Survey Calculator or Ruler with Caliper, Protractor?

Engineering Survey Calculator ships an update every 24 months, and Ruler with Caliper, Protractor every 28 months. Most recently, Engineering Survey Calculator was updated on October 19, 2026 and Ruler with Caliper, Protractor on October 22, 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.*