Comparison

VerbTeX LaTeX Editor vs DWSIM Simulator

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

Head to head
About

VerbTeX LaTeX Editor

Create and manage LaTeX projects on your iOS device. Generate PDFs offline or online with support for various compilers and bibliography tools. Features include cloud synchronization, Git integration, and custom font support.

Highlights
  • Offline PDF compilation
  • Multiple LaTeX compilers (PdfLaTeX, XeLaTeX, LuaLaTeX)
  • BibTeX/Biber support
  • Cloud synchronization (Verbosus)
  • Dropbox/Box synchronization
  • Git integration
  • iCloud integration
  • Zotero/Mendeley integration
Features
Read full description

VerbTeX Pro is the secure LaTeX Editor for your iOS device. It allows you to create and manage LaTeX projects directly on your iOS device and generate a PDF offline (Verbnox) or online (Verbosus). This software is provided "as is" without warranties or conditions of any kind, either expressed or implied. Features: * 2 Modes: Local (stores .tex documents on your device) and Cloud (synchronizes your projects with Verbosus) * Offline compilation (Local Mode, enable in Settings) * Use PdfLaTeX, XeLaTeX or LuaLaTeX to generate a PDF * Use BibTeX or Biber for bibliographies * Automatic Dropbox synchronization (Local Mode) * Automatic Box synchronization (Local Mode) * Git integration (Local Mode) * iCloud integration (Local Mode) * Zotero integration (Local Mode) * Mendeley integration (Local Mode) * AI assistant (available in supported regions) * Custom keyboard shortcuts * Inverse search (jump from PDF to .tex file) * Syntax highlighting * Line numbers * Autosave * Hotkeys (see below) * File upload incl. subfolders (Local Mode) * Web-Interface (Cloud Mode) * Two factor authentication (Cloud Mode, in combination with Copiosus) * No ads Additional features in VerbTeX Pro: * Code completion (commands) * 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) * Support development of free iOS apps If you experience any performance issues when loading a project or while using the editor please try * to disable syntax highlighting and line numbers by choosing Settings -> Syntax Highlighting * to split up your project into multiple .tex files by using the include{...} command of LaTeX Import or export existing projects (Local Mode): * Git integration lets you create a new or clone an existing repository. * Automatic Dropbox or Box synchronization (Settings -> Link to Dropbox or Box). Synchronization is done once a minute. Use any .ttf/.otf font (Local Mode): If you want to use a custom font or a font that is not installed you can import it via Git integration, via Dropbox, via Box or manually via Finder. In your project you can use the font like this: \documentclass{article} \usepackage{fontspec} \setmainfont{fontname.otf} \begin{document} \section{Main Heading} Это тест \end{document} You can write chinese in PdfTeX using the CJKutf8 package as shown in the following example: \documentclass{article} \usepackage{CJKutf8} \begin{document} \begin{CJK}{UTF8}{gbsn} 这是一个测试 \end{CJK} \end{document} You can write chinese in XeTeX using the xeCJK package as shown in the following example: \documentclass{article} \usepackage{xeCJK} \begin{document} 这是一个测试 \end{document} 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 Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

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
Read full description

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.

Screenshots

VerbTeX LaTeX Editor4 screens
DWSIM Simulator4 screens

Verdict

The call

The clearest difference is monetization model: DWSIM Simulator at free against VerbTeX LaTeX Editor's freemium. DWSIM Simulator also leads on iOS requirement (12.0 vs 18.6). VerbTeX LaTeX Editor's advantage is update cadence (fortnightly vs every 6 weeks) and review sentiment (71% vs 57%). On price, rating, ratings volume 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. VerbTeX LaTeX Editor sells 2 in-app purchases, starting at $3.99 per month and DWSIM Simulator sells 10 one-off in-app purchases. 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 — 4.5 for VerbTeX LaTeX Editor against 4.7 for DWSIM Simulator. Both are backed by a comparable volume of ratings — 168 and 107 respectively. Written reviews are what separate them: 71% of VerbTeX LaTeX Editor's written reviews are positive against 57% of DWSIM Simulator's.

UpkeepUpdate frequency

VerbTeX LaTeX Editor ships an update fortnightly, DWSIM Simulator every 6 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
VerbTeX LaTeX Editor versus DWSIM Simulator: the parameters behind the verdict, then further details
ParameterVerbTeX LaTeX EditorDWSIM Simulator
PriceFreeFree
Rating4.5 (168 ratings)4.7 (107 ratings) — better
Positive reviews71.1% of reviews — better57.1% of reviews
Number of ratings168 — better107
Update frequencyFortnightly — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.612.0 — better
Further details — not scored
Size27 MB106 MB
Age rating4+4+
DeveloperVerbosus.comDaniel Medeiros

Customer experience

VerbTeX LaTeX Editor

All ratings168 ratings
Positive90.5%
Neutral3.6%
Negative6.0%
Written reviews197 reviews
Positive71.1%
Neutral10.2%
Negative18.8%

DWSIM Simulator

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

Bugs and requests

VerbTeX LaTeX Editor

Reported bugs

83 issues
  • Cannot clone git
  • Does not work with subfiles package
  • New version does not support adding files
  • PDF generation fails with BibTeX log
  • Cannot insert images
Show 78 more
  • App closes unexpectedly without saving
  • Dropbox sync issues
  • Cannot open or save to iCloud files
  • File folder location is hard to set
  • App freezes on project page (cloud feature)
  • Crashes when trying to access preferences
  • Cannot open Dropbox files with non-UTF-8 encoding
  • Compilation issues with older versions
  • Cannot edit tex files in local mode
  • Display bugs when switching between US and JPN input
  • PDF conversion fails with Japanese input
  • Cannot open existing tex files
  • Shows only folders, not files, in Dropbox
  • Error when trying to use \includegraphics
  • Problems with Cyrillic fonts display
  • Umlaute not displaying correctly
  • Plotting functions not displayed realistically
  • Cannot compile plain documents quickly
  • File organization is unclear
  • Cannot edit .tex files created in local mode
  • Cannot use script to transfer or continue editing on computer without cloud account
  • PDF generation fails with BibTeX log
  • Cannot open or save to iCloud files
  • App freezes on project page (cloud feature)
  • Crashes when trying to access preferences
  • Cannot open Dropbox files with non-UTF-8 encoding
  • Compilation issues with older versions
  • Cannot edit tex files in local mode
  • Display bugs when switching between US and JPN input
  • PDF conversion fails with Japanese input
  • Cannot open existing tex files
  • Shows only folders, not files, in Dropbox
  • Error when trying to use \includegraphics
  • Problems with Cyrillic fonts display
  • Umlaute not displaying correctly
  • Plotting functions not displayed realistically
  • Cannot compile plain documents quickly
  • File organization is unclear
  • Cannot edit .tex files created in local mode
  • Cannot use script to transfer or continue editing on computer without cloud account
  • PDF generation fails with BibTeX log
  • Cannot open or save to iCloud files
  • App freezes on project page (cloud feature)
  • Crashes when trying to access preferences
  • Cannot open Dropbox files with non-UTF-8 encoding
  • Compilation issues with older versions
  • Cannot edit tex files in local mode
  • Display bugs when switching between US and JPN input
  • PDF conversion fails with Japanese input
  • Cannot open existing tex files
  • Shows only folders, not files, in Dropbox
  • Error when trying to use \includegraphics
  • Problems with Cyrillic fonts display
  • Umlaute not displaying correctly
  • Plotting functions not displayed realistically
  • Cannot compile plain documents quickly
  • File organization is unclear
  • Cannot edit .tex files created in local mode
  • Cannot use script to transfer or continue editing on computer without cloud account
  • PDF generation fails with BibTeX log
  • Cannot open or save to iCloud files
  • App freezes on project page (cloud feature)
  • Crashes when trying to access preferences
  • Cannot open Dropbox files with non-UTF-8 encoding
  • Compilation issues with older versions
  • Cannot edit tex files in local mode
  • Display bugs when switching between US and JPN input
  • PDF conversion fails with Japanese input
  • Cannot open existing tex files
  • Shows only folders, not files, in Dropbox
  • Error when trying to use \includegraphics
  • Problems with Cyrillic fonts display
  • Umlaute not displaying correctly
  • Plotting functions not displayed realistically
  • Cannot compile plain documents quickly
  • File organization is unclear
  • Cannot edit .tex files created in local mode
  • Cannot use script to transfer or continue editing on computer without cloud account

Requested features

32 requests
  • Autosave functionality
  • Better external keyboard support (e.g., Command+G for search)
  • Search and replace functionality
  • PDF preview with jump-to-editor feature
  • Display last edited passage in PDF preview
Show 27 more
  • iCloud Drive integration
  • Access to 'On My iPad' and Apple's Files app
  • Import existing LaTeX projects and documents
  • Command suggestions/autofill for commands
  • Ability to edit .sty/.cls files
  • Dark mode support
  • Highlighting brackets
  • Shortcuts for common math symbols
  • Specify areas for math and text display
  • View PDF and source simultaneously
  • Work on source files saved in other apps' shared file systems
  • Zooming PDF display
  • Line number references
  • Syntax highlighting color customization
  • Support for Japanese articles (jarticle class)
  • Support for Cyrillic fonts and UTF-8 encoding
  • Improved file sharing and PC transfer methods
  • Auto-save on PDF preview
  • Export .tex files easily
  • Add shortcuts for common functions and equations
  • Built-in documentation for supported packages
  • More intuitive interface for file management
  • Support for additional cloud storage like OneDrive
  • Ability to zoom PDF display
  • Support for Xelatex and pdftex
  • Ability to manage project files (folders, images)
  • Support for TikZ

DWSIM Simulator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

VerbTeX LaTeX Editor

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

Questions

Is VerbTeX LaTeX Editor free?
VerbTeX LaTeX Editor is free to download, with in-app purchases available.
Is DWSIM Simulator free?
DWSIM Simulator is free to download, with in-app purchases available.
Which has better reviews, VerbTeX LaTeX Editor or DWSIM Simulator?
DWSIM Simulator is rated higher. VerbTeX LaTeX Editor averages 4.5 out of 5 from 168 ratings, while DWSIM Simulator averages 4.7 from 107 ratings.
Do VerbTeX LaTeX Editor or DWSIM Simulator have ads?
Neither VerbTeX LaTeX Editor nor DWSIM Simulator shows ads.
Which is updated more often, VerbTeX LaTeX Editor or DWSIM Simulator?
VerbTeX LaTeX Editor ships an update fortnightly, and DWSIM Simulator every 6 weeks. Most recently, VerbTeX LaTeX Editor was updated on October 23, 2026 and DWSIM Simulator on October 24, 2026.

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