Chemical Engineering AppSuite HD vs DWSIM Simulator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chemical Engineering AppSuite HD
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.
- 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
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There are many unit conversion apps and there are many calculator apps... There are even chemistry apps and engineering apps... but there is only one Chemical Engineering AppSuite!!! Chemical Engineering AppSuite for iPad and iPhone has been developed by a team of chemical engineers for both professionals and students. This one-of-a-kind app features many equations and data used by chemical engineers, chemists and other engineers and integrates them with unprecedented functionality! And yes, we have also unit converters and graphing calculators. The app is also great for any high school or college student in science and math courses. Professionals will also find it very useful! Anyone with an interest in science, chemistry, math or engineering can find ways to use Chemical Engineering AppSuite HD! Highlights of the app include: Full steam table calculations based on IAPWS95 model. Database with 1000+ common industrial and laboratory chemicals Unit converters for temperature, pressure, length, area, time, and many, many more. Select your favorites for quick access! Physical property calculations for more than 1000 compounds and elements including densities, vapor pressures, heat capacities, viscosities. "ChemE Tools" for rapidly solving problems in fluid dynamics, process controls, mass/mole calculations and combustion reactions! Periodic table of the elements with a high-resolution, zoomable view Thermodynamic Equations of State: Rapidly solve for any variable in ideal gas, Peng-Robinson, van der Waals, SRK, and others. Calculation of compressibility factors and graphing of individual compressibility charts via the Lee-Kesler model Binary vapor-liquid equilibrium prediction with graphing via Raoult's Law (ideal) or Wilson Model (real). Over 675 pairs possible in the Wilson Model. Spreadsheet, statistics, and graphing tools with a built in graphing calculator! (iPad only). The iPhone version includes a very useful calculator as well! Matrix tools and linear equation solvers. Randomized practice problems for mass balances. Get data from the app and share via PDF, photos and Twitter. Follow us on Twitter and send us your feedback and suggestions for new content: @Vector254 Check out our other apps: Engineering Unit Converter and ODEsseus - Numerical Solver for Differential Equations.
DWSIM Simulator
This app provides a powerful offline chemical process simulation tool. It allows engineers to build complex process models, perform thermodynamic calculations, and analyze various unit operations. Features include a touch-enabled PFD interface, extensive compound databases, and advanced calculation engines.
- Offline chemical process simulation
- Touch-enabled PFD drawing interface
- Extensive thermodynamic models
- Compound database for 1500+ compounds
- Unit operation models
- Chemical reaction and reactor support
- Flowsheet parametric studies
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DWSIM Simulator is a Steady-State Chemical Process Simulator, featuring: - Offline functionality: no need to connect to online databases or servers, DWSIM runs completely offline on your device, wherever you are! - Touch-enabled Process Flowsheet Diagram (PFD) Drawing Interface: A hardware-accelerated PFD interface with touch support allows Chemical Engineers to build complex process models in a few minutes - VLE/VLLE/SVLE/SVLLE calculations using Equation of State and Activity Coefficient models: calculate fluid properties and phase distribution with advanced thermodynamic models - Compound database with extensive data for more than 1500 compounds - Rigorous Thermodynamic Models*: PC-SAFT EOS, GERG-2008 EOS, Peng-Robinson EOS, Soave-Redlich-Kwong EOS, Lee-Kesler-Plöcker, Chao-Seader, Modified UNIFAC (Dortmund), UNIQUAC, NRTL, Wilson, Raoult's Law and IAPWS-IF97 Steam Tables - Thermophysical state (phase) properties: Enthalpy, Entropy, Internal Energy, Gibbs and Helmholtz Free Energies, Compressibility Factor, Isothermal Compressibility, Bulk Modulus, Speed of Sound, Joule-Thomson Expansion Coefficient, Density, Molecular Weight, Heat Capacity, Thermal Conductivity and Viscosity - Single-compound properties: Critical Parameters, 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 - Comprehensive Unit Operation Model set*, including Mixer, Splitter, Separator, Pump, Compressor, Expander, Heater, Cooler, Valve, Shortcut Column, Heat Exchanger, Component Separator, Pipe Segment, Rigorous Distillation and Absorption Columns, Wind Turbine, Hydroelectric Turbine, Water Electrolyzer and Solar Panel - Support for Chemical Reactions and Reactors*: DWSIM features support for Conversion, Equilibrium and Kinetic reactions, together with their respective Reactor models - Flowsheet Parametric Studies: Use the Sensitivity Analysis Tool to run automated parametric studies on your process model; The Flowsheet Optimizer tool can bring the simulation to an optimum state according to user-defined criteria; The Calculator tool can read flowsheet variables, perform math operations on them and write the results back to the flowsheet - Petroleum Characterization: Bulk C7+ and TBP Distillation Curve characterization tools enable creation of pseudocompounds to simulate petroleum processing facilities - Parallel multicore CPU calculation engine: a fast and reliable flowsheet solver that takes advantage of the multicore CPUs on modern mobile devices - Save/Load XML simulation files on the device or in the cloud - Export simulation results to PDF and Text documents * Some items are available through in-app purchases ABOUT CHEMICAL PROCESS SIMULATION Chemical Process Simulation is a model-based representation of chemical, physical, biological, and other technical processes and unit operations in software. Basic prerequisites are a thorough knowledge of chemical and physical properties of pure components and mixtures, of reactions, and of mathematical models which, in combination, allow the calculation of a process in a computing device. Process simulation software describes processes in flow diagrams where unit operations are positioned and connected by product or educt streams. The software has to solve the mass and energy balance to find a stable operating point. The goal of a process simulation is to find optimal conditions for a process.
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Verdict
The clearest difference is price: DWSIM Simulator at Free against Chemical Engineering AppSuite HD's $0.99. Chemical Engineering AppSuite HD's advantage is in-app purchases (none vs 10) and review sentiment (86% vs 57%). On rating, ratings volume, update cadence and ads 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
DWSIM Simulator is free to download; Chemical Engineering AppSuite HD costs $0.99 up front. DWSIM Simulator sells 10 one-off in-app purchases. Chemical Engineering AppSuite HD asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.6 for Chemical Engineering AppSuite HD against 4.7 for DWSIM Simulator. Both are backed by a comparable volume of ratings — 81 and 107 respectively. Written reviews are what separate them: 86% of Chemical Engineering AppSuite HD's written reviews are positive against 57% of DWSIM Simulator's.
Chemical Engineering AppSuite HD ships an update every 2 months, DWSIM Simulator every 6 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | Chemical Engineering AppSuite HD | DWSIM Simulator |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.6 (81 ratings) | 4.7 (107 ratings) — better |
| Positive reviews | 86.1% of reviews — better | 57.1% of reviews |
| Number of ratings | 81 | 107 — better |
| Update frequency | Every 2 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | #199 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 7.1 — better | 12.0 |
| Further details — not scored | ||
| Size | 46 MB | 106 MB |
| Age rating | 4+ | 4+ |
| Developer | Vector 254 LLC | Daniel Medeiros |
Customer experience
Chemical Engineering AppSuite HD
DWSIM Simulator
Bugs and requests
Chemical Engineering AppSuite HD
Reported bugs
11 issues- 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
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- Converter doesn't convert gallons to barrels correctly
- 1 gallon not equal to 8 pints
- Barrel of oil conversion factor is incorrect
- Time converter converting hours to days incorrectly
- Area units converter needs fixing
- Graphical bugs when changing tools/graphs
Requested features
20 requests- 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
Show 15 moreShow fewer
- Add liquid level calculator
- Add concentration section to conversions
- Add more steam tables for common compounds (ammonia, R-134a)
- Include unit operators and their functions
- Include examples of industrial processes
- Include PFD and P&ID information
- Include quizzes and answers
- Add a built-in scientific calculator
- Fix area units converter
- Fix time converter
- Reference for calculations
- Add butane and other common compounds
- Consistent use of preferred units
- Obtain temperature from entropy and pressure data for cycle problems
- Add Raul's Law
DWSIM Simulator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Chemical Engineering AppSuite HD
No in-app purchases
DWSIM Simulator
- User-Defined Unit Set$1.99
- Flowsheet Utilities Pack$2.99
- Unit Operations Pack 1$2.99
Show 7 moreShow fewer
- Unit Operations Pack 2$2.99
- Unit Operations Pack 3$2.99
- Activity Coeff. Model Pack$3.99
- Equation of State Model Pack$3.99
- Reactor Models Pack$4.99
- Unlock All Features$9.99
- Unlock All Features$39.99
Questions
Is Chemical Engineering AppSuite HD free?
Is DWSIM Simulator free?
Which has better reviews, Chemical Engineering AppSuite HD or DWSIM Simulator?
Do Chemical Engineering AppSuite HD or DWSIM Simulator have ads?
Which is updated more often, Chemical Engineering AppSuite HD or DWSIM Simulator?
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