# DWSIM Simulator vs Robi Fire AR

The clearest difference is in-app purchases: Robi Fire AR at none against DWSIM Simulator's 10. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. DWSIM Simulator sells 10 one-off in-app purchases. Robi Fire AR asks for nothing beyond the download.

DWSIM Simulator ships an update every 6 weeks, Robi Fire AR monthly. The most recent releases landed on September 13, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | DWSIM Simulator | Robi Fire AR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (105 ratings)](https://appshunter.io/ios/app/dwsim-simulator/id1162110266/reviews)** | — |
| Number of ratings | **105** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free | — |
| Size | 106 MB | 122 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Medeiros](https://appshunter.io/developer/1091004600) | [RASHAD KABIR](https://appshunter.io/developer/956444843) |

## 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 |


### Robi Fire AR

[App page](https://appshunter.io/ios/app/robi-fire-ar/id1536747561)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DWSIM Simulator free?

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

### Is Robi Fire AR free?

Robi Fire AR is free to download, with no in-app purchases.

### Do DWSIM Simulator or Robi Fire AR have ads?

Neither DWSIM Simulator nor Robi Fire AR shows ads.

### Which is updated more often, DWSIM Simulator or Robi Fire AR?

DWSIM Simulator ships an update every 6 weeks, and Robi Fire AR monthly. Most recently, DWSIM Simulator was updated on September 13, 2026 and Robi Fire AR on May 16, 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.*