# DWSIM Simulator vs Energy Auditor Mobile

The clearest difference is update cadence: Energy Auditor Mobile at daily against DWSIM Simulator's every 6 weeks. DWSIM Simulator's advantage is iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. DWSIM Simulator sells 10 one-off in-app purchases and Energy Auditor Mobile sells 1 in-app purchase, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

DWSIM Simulator ships an update every 6 weeks, Energy Auditor Mobile daily. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | DWSIM Simulator | Energy Auditor Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (108 ratings)](https://appshunter.io/ios/app/dwsim-simulator/id1162110266/reviews)** | — |
| Number of ratings | **108** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Daily** |
| Monetization | Free | — |
| Size | 106 MB | 32 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Medeiros](https://appshunter.io/developer/1091004600) | [Kirk May](https://appshunter.io/developer/1834381707) |

## 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 |


### Energy Auditor Mobile

[App page](https://appshunter.io/ios/app/energy-auditor-mobile/id6751273080)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Energy Auditor App Monthly | $5.99 | per month |


## Frequently asked questions

### Is DWSIM Simulator free?

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

### Is Energy Auditor Mobile free?

Energy Auditor Mobile is free to download, with in-app purchases available.

### Do DWSIM Simulator or Energy Auditor Mobile have ads?

Neither DWSIM Simulator nor Energy Auditor Mobile shows ads.

### Which is updated more often, DWSIM Simulator or Energy Auditor Mobile?

DWSIM Simulator ships an update every 6 weeks, and Energy Auditor Mobile daily. Most recently, DWSIM Simulator was updated on November 11, 2026 and Energy Auditor Mobile on November 8, 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.*