Comparison

DWSIM Simulator vs Anoc Octave Editor

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
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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.

About

Anoc Octave Editor

Create and manage Octave projects on your iOS device. Generate results and plots using an online editor. Offers local and cloud modes with features like syntax highlighting and Git integration.

Highlights
  • Octave project creation and management
  • Online result and plot generation
  • Local and Cloud modes
  • Dropbox and Box synchronization
  • Git integration
  • Syntax highlighting and line numbers
  • Assistive keyboard and hotkeys
Features
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Anoc is an Octave Editor for your iOS device. It allows you to create and manage Octave projects directly on your iOS device and generate the result and plots by using Verbosus (Online Octave Editor). This software is provided "as is" without warranties or conditions of any kind, either expressed or implied. Features: * 2 Modes: Local Mode (stores .m documents on your device) and Cloud Mode (synchronizes your projects with Verbosus) * Use a dedicated server to perform calculations and generate plots * Automatic Dropbox synchronization (Local Mode) * Automatic Box synchronization (Local Mode) * Git integration (Local Mode) * AI assistant (ChatGPT and Claude, available in supported regions) * Custom keyboard shortcuts * Encrypted transmission to the server by using HTTPS * Syntax highlighting (operators, plot functions, comments) * Line numbers * Assistive keyboard * Hotkeys (see below) * Web-Interface (Cloud Mode) * Two factor authentication (Cloud Mode, in combination with Copiosus) * No ads Additional features in Anoc Pro: * Unlimited number of projects (Local Mode) * Unlimited number of documents per project (Local Mode) * Unlimited number of file uploads per project (Local Mode) * Unlimited number of projects (Cloud Mode) * Unlimited number of documents per project (Cloud Mode) Hotkeys in editor (can be changed in editor - settings - keyboard shortcuts): ctrl+,: Settings ctrl+s: Save ctrl+g: Generate result ctrl+f: Search ctrl+p: Preview ctrl+n: New document ctrl+d: Delete document ctrl+.: Next document Function files: Create a new file e.g. worker.m and fill it with function s = worker(x) % worker(x) Calculates sine(x) in degrees s = sin(x*pi/180); In your main .m file you can call it with worker(2) Load a file into a variable with the load command (Local Mode): data = load('name-of-file.txt'); Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

Screenshots

DWSIM Simulator4 screens
Anoc Octave Editor4 screens

Verdict

The call

The clearest difference is monetization model: DWSIM Simulator at free against Anoc Octave Editor's free with in-app purchases. DWSIM Simulator also leads on iOS requirement (12.0 vs 18.6). Anoc Octave Editor's advantage is review sentiment (82% vs 57%). On price, rating, ratings volume and update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. DWSIM Simulator sells 10 one-off in-app purchases and Anoc Octave Editor sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for DWSIM Simulator against 4.6 for Anoc Octave Editor. Both are backed by a comparable volume of ratings — 105 and 37 respectively. Written reviews are what separate them: 57% of DWSIM Simulator's written reviews are positive against 82% of Anoc Octave Editor's.

UpkeepUpdate frequency

DWSIM Simulator ships an update every 6 weeks, Anoc Octave Editor every 3 weeks. The most recent releases landed on September 13, 2026 and September 14, 2026 respectively.

Scorecard3 real differences · 7 level
DWSIM Simulator versus Anoc Octave Editor: the parameters behind the verdict, then further details
ParameterDWSIM SimulatorAnoc Octave Editor
PriceFreeFree
Rating4.6 (105 ratings)4.6 (37 ratings)
Positive reviews57.1% of reviews81.8% of reviews — better
Number of ratings105 — better37
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better18.6
Further details — not scored
Size106 MB27 MB
Age rating4+4+
DeveloperDaniel MedeirosVerbosus.com

Customer experience

DWSIM Simulator

All ratings105 ratings
Positive91.4%
Neutral3.8%
Negative4.8%
Written reviews7 reviews
Positive57.1%
Neutral28.6%
Negative14.3%

Anoc Octave Editor

All ratings37 ratings
Positive94.6%
Neutral0.0%
Negative5.4%
Written reviews11 reviews
Positive81.8%
Neutral0.0%
Negative18.2%

In-app purchases

10 purchases

DWSIM Simulator

One-time10
  • User-Defined Unit Set$1.99
  • Flowsheet Utilities Pack$2.99
  • Unit Operations Pack 1$2.99
Show 7 more
  • 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
2 purchases

Anoc Octave Editor

Subscriptions1
  • Upgrade: Subscription$3.991 Month
One-time1
  • Upgrade: Forever$8.99

Questions

Is DWSIM Simulator free?
DWSIM Simulator is free to download, with in-app purchases available.
Is Anoc Octave Editor free?
Anoc Octave Editor is free to download, with in-app purchases available.
Which has better reviews, DWSIM Simulator or Anoc Octave Editor?
DWSIM Simulator and Anoc Octave Editor are both rated 4.6 out of 5 on the App Store, from 105 and 37 ratings respectively.
Do DWSIM Simulator or Anoc Octave Editor have ads?
Neither DWSIM Simulator nor Anoc Octave Editor shows ads.
Which is updated more often, DWSIM Simulator or Anoc Octave Editor?
DWSIM Simulator ships an update every 6 weeks, and Anoc Octave Editor every 3 weeks. Most recently, DWSIM Simulator was updated on September 13, 2026 and Anoc Octave Editor on September 14, 2026.

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