# RIDS calc vs Engineers Toolbox

The clearest difference is rating: RIDS calc at 5.0 against Engineers Toolbox's 1.0. RIDS calc also leads on iOS requirement (13.0 vs 16.1). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RIDS calc holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

## The numbers

| Metric | RIDS calc | Engineers Toolbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rids-calc/id1513200801/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/engineers-toolbox/id6452432402/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | — |
| Monetization | Free | Free |
| Size | 11 MB | 59 MB |
| Requires iOS | **13.0** | 16.1 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Wayne Henderson](https://appshunter.io/developer/1265636597) | [Charles Crawford](https://appshunter.io/developer/1658631002) |

## What reviewers say

### RIDS calc

[App page](https://appshunter.io/ios/app/rids-calc/id1513200801)

This app accurately calculates properties for air, water, seawater, and sugars. It uses detailed, published formulations for precise results across various conditions, including solids level and density of corn syrup.

**Highlights:** Accurate property calculations, Supports air, water, seawater, and sugars, Calculates solids level and density, Uses detailed published formulations, State-of-the-art accuracy, Includes detailed air and expanded water properties

**Features:** macOS Compatibility

**In-app purchases:** none


### Engineers Toolbox

[App page](https://appshunter.io/ios/app/engineers-toolbox/id6452432402)

This utility app offers essential conversion functions for common engineering units like distance, area, volume, pressure, and weight. It allows users to save default units for faster, repeated conversions without re-selecting them each time.

**Highlights:** Distance conversion, Area conversion, Volume conversion, Pressure conversion, Weight/Mass conversion, Save default units

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RIDS calc free?

RIDS calc is free to download, with no in-app purchases.

### Is Engineers Toolbox free?

Engineers Toolbox is free to download, with no in-app purchases.

### Which has better reviews, RIDS calc or Engineers Toolbox?

RIDS calc is rated higher. RIDS calc averages 5.0 out of 5 from 1 ratings, while Engineers Toolbox averages 1.0 from 1 ratings.

### Do RIDS calc or Engineers Toolbox have ads?

Neither RIDS calc nor Engineers Toolbox shows ads.

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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.*