# Chemical Engineering AppSuite HD vs DoE Toolkit

The clearest difference is price: Chemical Engineering AppSuite HD at $0.99 against DoE Toolkit's $9.99. Chemical Engineering AppSuite HD also leads on update cadence (every 2 months vs every 21 months) and ratings volume (81 vs 1). DoE Toolkit's advantage is rating (5.0 vs 4.6). On ads, in-app purchases and device support there is nothing between them.

Chemical Engineering AppSuite HD costs $0.99 and DoE Toolkit $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

DoE Toolkit holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Chemical Engineering AppSuite HD has 81 ratings behind it against 1, so its average is the more settled of the two.

Chemical Engineering AppSuite HD ships an update every 2 months, DoE Toolkit every 21 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Chemical Engineering AppSuite HD | DoE Toolkit |
| --- | --- | --- |
| Price | **$0.99** | $9.99 |
| Rating | [4.6 (81 ratings)](https://appshunter.io/ios/app/chemical-engineering-appsuite-hd/id526158171/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/doe-toolkit/id1608415467/reviews)** |
| Number of ratings | **81** | 1 |
| Positive reviews | 86.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 21 months |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | **#199** | — |
| Size | 46 MB | 13 MB |
| Requires iOS | **7.1** | 14.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vector 254 LLC](https://appshunter.io/developer/821141755) | [Kal-El Software](https://appshunter.io/developer/394174930) |

## What reviewers say

### Chemical Engineering AppSuite HD

[App page](https://appshunter.io/ios/app/chemical-engineering-appsuite-hd/id526158171)

**Currently charting:** #199 Top Paid · Productivity (US App Store)

This comprehensive app suite offers a vast array of tools for chemical engineers, chemists, and students. It includes unit converters, physical property calculations, thermodynamic equations, and specialized calculators for fluid dynamics and more. Access a chemical database, periodic table, and graphing tools.

**Highlights:** Steam table calculations, Chemical database (1000+ compounds), Extensive unit converters, Physical property calculations, Fluid dynamics & process control tools, Thermodynamic equations of state, Vapor-liquid equilibrium prediction

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

**In-app purchases:** none

**What reviewers like**

- 👍 Very useful for chemical engineering
- 💡 Extensive compound database
- 💡 Comprehensive unit converter
- 👍 Great for quick calculations
- 👍 Handy for students and professionals

**What reviewers complain about**

- 🐛 App crashes frequently
- 🐛 Converter issues
- 🐛 Incompatible with newer iOS versions
- 🐛 Some unit conversions are incorrect
- 🐛 Lacks some common compounds

**Reported bugs**

- App shuts down when using converter
- Conversion tables not working with new iOS versions
- Unit converter not working
- App crashes with iOS 11
- App crashes on iOS 7.x

**Requested features**

- Add Internal Energy
- Save imperial units as default
- Add more ranges for Antoine constants
- Functions for choosing equations of state
- Add conical frustum volume calculator


### DoE Toolkit

[App page](https://appshunter.io/ios/app/doe-toolkit/id1608415467)

This application offers tools for generating and optimizing experimental designs across various methodologies. It allows for customization of design display, randomization, and replication, with export options for spreadsheet compatibility.

**Highlights:** Generate classic experimental designs, Optimize experimental runs, Randomize, replicate, and block designs, Add central and axial points, Customize design display with colors, Export designs to CSV format

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chemical Engineering AppSuite HD free?

Chemical Engineering AppSuite HD costs $0.99, with no in-app purchases.

### Is DoE Toolkit free?

DoE Toolkit costs $9.99, with no in-app purchases.

### Which has better reviews, Chemical Engineering AppSuite HD or DoE Toolkit?

DoE Toolkit is rated higher. Chemical Engineering AppSuite HD averages 4.6 out of 5 from 81 ratings, while DoE Toolkit averages 5.0 from 1 ratings.

### Do Chemical Engineering AppSuite HD or DoE Toolkit have ads?

Neither Chemical Engineering AppSuite HD nor DoE Toolkit shows ads.

### Which is updated more often, Chemical Engineering AppSuite HD or DoE Toolkit?

Chemical Engineering AppSuite HD ships an update every 2 months, and DoE Toolkit every 21 months. Most recently, Chemical Engineering AppSuite HD was updated on October 26, 2026 and DoE Toolkit on October 27, 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.*