RIDS calc vs Engineers Toolbox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RIDS calc
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.
- 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
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RIDS simplifies the accurate calculation of several properties of Air, Water, Seawater, and Sugars of various composition. A typical use of RIDS is to calculate the solids level and density of a corn syrup from the refractive index. RIDS employs detailed, published formulations that cover a wide range of conditions while maintaining state-of-the-art accuracy over that range. Detailed air properties and expanded water properties by IF97 international standard
Engineers Toolbox
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.
- Distance conversion
- Area conversion
- Volume conversion
- Pressure conversion
- Weight/Mass conversion
- Save default units
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This application is a simple utility providing some basic conversion functions for distance, area, volume, pressure and weight/mass. Save default units for conversion operations to speedily convert values without needing to constantly set the units values for the operation.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | RIDS calc | Engineers Toolbox |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 10 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.1 |
| Further details — not scored | ||
| Size | 11 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | Wayne Henderson | Charles Crawford |
Customer experience
RIDS calc
Engineers Toolbox
In-app purchases
RIDS calc
No in-app purchases
Engineers Toolbox
No in-app purchases





