# DWSIM Simulator vs VirnetX One

The clearest difference is in-app purchases: VirnetX One at none against DWSIM Simulator's 10. VirnetX One also leads on rating (5.0 vs 4.6). DWSIM Simulator's advantage is ratings volume (105 vs 2) and iOS requirement (12.0 vs 14.3). On price, update cadence, ads and monetization model there is nothing between them.

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

VirnetX One holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: DWSIM Simulator has 105 ratings behind it against 2, so its average is the more settled of the two.

DWSIM Simulator ships an update every 6 weeks, VirnetX One every 3 months. The most recent releases landed on October 1, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | DWSIM Simulator | VirnetX One |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (105 ratings)](https://appshunter.io/ios/app/dwsim-simulator/id1162110266/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/virnetx-one/id1586854126/reviews)** |
| Number of ratings | **105** | 2 |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 106 MB | 12 MB |
| Requires iOS | **12.0** | 14.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Medeiros](https://appshunter.io/developer/1091004600) | [VirnetX Inc.](https://appshunter.io/developer/1022829556) |

## 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 |


### VirnetX One

[App page](https://appshunter.io/ios/app/virnetx-one/id1586854126)

Securely access work applications and team communications from your mobile device. This enterprise tool enables remote work by providing on-demand, secure access to business information, enhancing productivity while adhering to corporate security policies.

**Highlights:** Secure access to work applications, Team communication, Remote work enablement, On-demand business information access, Corporate security policy adherence, IT administrator management

**In-app purchases:** none


## Frequently asked questions

### Is DWSIM Simulator free?

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

### Is VirnetX One free?

VirnetX One is free to download, with no in-app purchases.

### Which has better reviews, DWSIM Simulator or VirnetX One?

VirnetX One is rated higher. DWSIM Simulator averages 4.6 out of 5 from 105 ratings, while VirnetX One averages 5.0 from 2 ratings.

### Do DWSIM Simulator or VirnetX One have ads?

Neither DWSIM Simulator nor VirnetX One shows ads.

### Which is updated more often, DWSIM Simulator or VirnetX One?

DWSIM Simulator ships an update every 6 weeks, and VirnetX One every 3 months. Most recently, DWSIM Simulator was updated on October 1, 2026 and VirnetX One on October 6, 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.*