# DWSIM Simulator vs EdrawMax

The clearest difference is rating: DWSIM Simulator at 4.6 against EdrawMax's 3.4. DWSIM Simulator also leads on monetization model (free vs free with in-app purchases) and ratings volume (105 vs 33). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. DWSIM Simulator sells 10 one-off in-app purchases and EdrawMax sells 9 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

DWSIM Simulator holds the better App Store score, 4.6 against 3.4. Both are backed by a comparable volume of ratings — 105 and 33 respectively. Written reviews complicate that: 57% of DWSIM Simulator's written reviews are positive against 64% of EdrawMax's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | DWSIM Simulator | EdrawMax |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (105 ratings)](https://appshunter.io/ios/app/dwsim-simulator/id1162110266/reviews)** | [3.4 (33 ratings)](https://appshunter.io/ios/app/edrawmax-ai-diagram-maker/id1663182670/reviews) |
| Number of ratings | **105** | 33 |
| Positive reviews | 57.1% of reviews | **64.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 106 MB | 38 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Medeiros](https://appshunter.io/developer/1091004600) | [Edraw Software Co., Ltd](https://appshunter.io/developer/1071176507) |

## What reviewers say

### DWSIM Simulator

[App page](https://appshunter.io/ios/app/dwsim-simulator/id1162110266)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| User-Defined Unit Set | $1.99 | one-time |
| Flowsheet Utilities Pack | $2.99 | one-time |
| Unit Operations Pack 1 | $2.99 | one-time |
| Unit Operations Pack 2 | $2.99 | one-time |
| Unit Operations Pack 3 | $2.99 | one-time |
| Activity Coeff. Model Pack | $3.99 | one-time |
| Equation of State Model Pack | $3.99 | one-time |
| Reactor Models Pack | $4.99 | one-time |
| Unlock All Features | $9.99 | one-time |
| Unlock All Features | $39.99 | one-time |


### EdrawMax

[App page](https://appshunter.io/ios/app/edrawmax-ai-diagram-maker/id1663182670)

This AI-powered diagramming tool transforms your ideas into professional visuals effortlessly. Create flowcharts, org charts, mind maps, and more with extensive templates and smart AI assistance. Collaborate seamlessly and export to various formats.

**Highlights:** Photo to editable diagram conversion, AI-powered diagram generation, 40,000+ templates and 17,000+ symbols, Multi-platform collaboration, Seamless sharing and export options, Import and edit Visio files

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EdrawMax Weekly Plan with ai | $6.99 | per 7 days |
| iOS Version Subscription | $9.99 | per 6 months |
| EdrawMax Anual Plan with ai | $29.99 | per year |
| Full-Platform Subscription 6 | $68.99 | per 6 months |
| Full-Platform Subscription 12 | $98.99 | per year |
| Cross-Platform 12 Months | $99.99 | per year |
| Edraw AI Tokens | $5.90 | one-time |
| Edraw AI tokens | $9.90 | one-time |
| Edraw AI tokens | $79.90 | one-time |

**What reviewers like**

- 👍 Easy to use and intuitive
- 🚀 Fast and smooth performance
- 💡 Helpful templates for quick start
- 🤝 Great collaboration features
- 🎨 Easy to customize diagrams

**What reviewers complain about**

- ❌ Not suitable for iPad
- 🐛 Generation failed errors
- 💳 Difficult to cancel auto-renewal
- 💸 No refunds for unwanted charges
- 📱 Mobile app is unusable

**Reported bugs**

- Data loss after signing out
- App not letting users join
- Generation failed errors
- iPhone version only, not iPad

**Requested features**

- iPad support
- Full-screen iPad app
- Replicate desktop version on mobile
- Improve mobile app usability


## Frequently asked questions

### Is DWSIM Simulator free?

DWSIM Simulator is free to download, with in-app purchases available.

### Is EdrawMax free?

EdrawMax is free to download, with in-app purchases available.

### Which has better reviews, DWSIM Simulator or EdrawMax?

DWSIM Simulator is rated higher. DWSIM Simulator averages 4.6 out of 5 from 105 ratings, while EdrawMax averages 3.4 from 33 ratings.

### Do DWSIM Simulator or EdrawMax have ads?

Neither DWSIM Simulator nor EdrawMax shows ads.

### Which is updated more often, DWSIM Simulator or EdrawMax?

DWSIM Simulator ships an update every 6 weeks, and EdrawMax every 6 weeks. Most recently, DWSIM Simulator was updated on October 1, 2026 and EdrawMax on October 7, 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.*