# DWSIM Calculator Free

> Thermodynamic property and phase equilibria calculator for chemical mixtures. (iPhone/iPad app by Daniel Medeiros.)

- Source: https://appshunter.io/ios/app/dwsim-calculator-free/id1091004601 (this page in markdown: same URL + `.md`)
- Developer: [Daniel Medeiros](https://appshunter.io/developer/1091004600)
- Category: Productivity, Education
- Price: Free
- Rating: 4.50/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 8.0 · 39 MB
- Languages: American English
- Released: 2016-03-13
- Data updated: 2026-08-21
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/dwsim-calculator-free/id1091004601/reviews.md

## What is DWSIM Calculator Free?

DWSIM Calculator is an app to calculate phase equilibria and properties of mixtures of substances (compounds) using advanced thermodynamic models. Based on the model library of DWSIM, an award-winning open-source process simulator for desktops, DWSIM Calculator for iOS features:

- An intuitive interface for desktop process simulator users;

- Free version includes data for Water, Ethanol, Methane, Ethane, Propane and Air only. Full version includes experimental data for more than 400 compounds;

- 6 calculation modes: Single Compound Properties, VLE/VLLE Phase Equilibria, True Critical Point, Pressure-Temperature Phase Envelope, T-x-y and P-x-y Binary Envelopes;

- Heater/Cooler Unit Operation;

- 5 thermodynamic model sets: Peng-Robinson Equation of State, NRTL, UNIQUAC, Raoult's Law and IAPWS-IF97 Steam Tables;

- 3 state specifications: Temperature/Pressure, Temperature/Vapor Fraction and Pressure/Vapor Fraction;
- Phase properties: Enthalpy, Entropy, Compressibility Factor, Density, Molecular Weight, Heat Capacity, Thermal Conductivity and Viscosity;

- Single Compound Properties: Critical Properties, Acentric Factor, Chemical formula, Structure formula, CAS Registry Number, Boiling Point Temperature, Vapor Pressure, Heat of Vaporization, Ideal gas Enthalpy, Ideal gas Enthalpy of Formation at 25 C, Ideal Gas Gibbs Free Energy of Formation at 25 C, Ideal Gas Entropy, Heat Capacity Cp, Ideal Gas Heat Capacity, Liquid Heat Capacity, Solid Heat Capacity, Heat Capacity Cv, Liquid Viscosity, Vapor Viscosity, Liquid Thermal Conductivity, Vapor Thermal Conductivity, Solid Density, Liquid Density and Molecular Weight. 

The calculation results can be viewed in text reports or charts. Reports can be shared as plain text (send as message, email, publish on facebook, etc) and charts can be shared as PDF or PNG files.

The full version includes data for more than 400 compounds and more Unit Operation models. 
More information available at http://dwsim.inforside.com.br/wiki/index.php?title=Calculator

## Key features

- Phase equilibria calculations
- Thermodynamic property calculations
- Multiple calculation modes
- Intuitive interface
- Shareable reports and charts
- Support for various thermodynamic models


## Frequently asked questions about DWSIM Calculator Free

### What compounds are included in DWSIM Calculator Free?

The free version of DWSIM Calculator includes data for Water, Ethanol, Methane, Ethane, Propane, and Air only. The full version offers data for over 400 compounds.

### What calculation modes does DWSIM Calculator Free offer?

DWSIM Calculator Free supports 6 calculation modes: Single Compound Properties, VLE/VLLE Phase Equilibria, True Critical Point, Pressure-Temperature Phase Envelope, T-x-y Binary Envelopes, and P-x-y Binary Envelopes.

### What thermodynamic models are available in DWSIM Calculator Free?

The app includes 5 thermodynamic model sets: Peng-Robinson Equation of State, NRTL, UNIQUAC, Raoult's Law, and IAPWS-IF97 Steam Tables.

### How can I share my calculation results from DWSIM Calculator Free?

Calculation results can be viewed in text reports or charts. Reports can be shared as plain text via messages or email, and charts can be shared as PDF or PNG files.

### What phase properties can DWSIM Calculator Free calculate?

The app can calculate phase properties such as Enthalpy, Entropy, Compressibility Factor, Density, Molecular Weight, Heat Capacity, Thermal Conductivity, and Viscosity.

### Is DWSIM Calculator Free available on Android?

Based on the provided data, DWSIM Calculator Free is available for iPhone, iPad, and iPod. Platform compatibility for Android is not specified.

### How often is DWSIM Calculator Free updated?

The latest version, 1.2.2, was released on November 30, 2016. The app was initially released on March 13, 2016, indicating infrequent updates.

### What is the user sentiment for DWSIM Calculator Free?

DWSIM Calculator Free has a rating of 4.5 stars from 2 ratings, suggesting generally positive user sentiment among its limited reviewers.

## Version history (last 5 releases)

### 1.2.2 — 2016-11-30

This app has been updated by Apple to display the Apple Watch app icon.

Fixed Enthalpy, Entropy and Cp calculation

### 1.2.1 — 2016-04-25

Fixed mixture editor view placement.

### 1.2 — 2016-04-20

- Unlocked Heater/Cooler Unit Operation;
- Added a function to normalize mixture mole/mass fractions;
- Fixed textboxes being covered by the keyboard during editing.

### 1.1 — 2016-03-23

Added an option to choose the font size in text reports;
Fixed background image resizing on some devices;
Minor bug fixes.

### 1.0 — 2016-03-13

No release notes.

## Apps similar to DWSIM Calculator Free

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Hydraulic System Calculator](https://appshunter.io/ios/app/hydraulic-system-calculator/id826281445) | 4.0 (3) | Free | Productivity |

## More apps by Daniel Medeiros

- [Natural Gas Props Calculator](https://appshunter.io/ios/app/natural-gas-props-calculator/id1099217044)
- [DWSIM Simulator](https://appshunter.io/ios/app/dwsim-simulator/id1162110266)
- [Chemyst](https://appshunter.io/ios/app/chemyst/id1477871260)
- [Falante](https://appshunter.io/ios/app/falante/id1491753530)
- [Plot Digitizer](https://appshunter.io/ios/app/plot-digitizer/id1497211648)

All apps by Daniel Medeiros: https://appshunter.io/developer/1091004600

## Related topics

[dwsim calculator free](https://appshunter.io/ios/topics/dwsim-calculator-free) · [dwsim simulator](https://appshunter.io/ios/topics/dwsim-simulator) · [dwsim](https://appshunter.io/ios/topics/dwsim)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*