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# Aspen HYSYS vs gPROMS Comparison - What are their main differences?

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Aspen HYSYSgPROMS[+ Add Product](#)

Reviews

**Aspen HYSYS** [

4.5/5(45)

](https://www.g2.com/products/aspen-hysys/reviews#reviews)

**gPROMS** [

4.3/5(25)

](https://www.g2.com/products/gproms/reviews#reviews)

Pricing

**Aspen HYSYS**
No pricing available

**gPROMS**
No pricing available

**Pricing Insights**
from reviews

Time to Implement

**Aspen HYSYS**
Not enough reviews yet

**gPROMS**
Not enough reviews yet

Return on Investment

**Aspen HYSYS**
Not enough reviews yet

**gPROMS**
Not enough reviews yet

Perceived Cost

**Aspen HYSYS**
$$$$$

**gPROMS**
Not enough reviews yet

Average Discount

**Aspen HYSYS**
Not enough reviews yet

**gPROMS**
Not enough reviews yet

Pros & Cons

**Aspen HYSYS**
Not enough data

**gPROMS**
Not enough data

Screenshots

**Aspen HYSYS**
No screenshot available

**gPROMS**
 ![gPROMS screenshot](https://images.g2crowd.com/cdn-cgi/image/width=600,height=600,fit=scale-down,format=auto,onerror=redirect,/https://images.g2crowd.com/uploads/attachment/file/38630/gPROMS_Screenshot-1.png)

Ratings

Meets Requirements

**Aspen HYSYS**

9.0

9.034

**gPROMS**

8.3

8.314

Ease of Use

**Aspen HYSYS**

8.5

8.534

**gPROMS**

7.6

7.614

Ease of Setup

**Aspen HYSYS**

8.1

8.16

**gPROMS**
Not enough data

Ease of Admin

**Aspen HYSYS**

7.8

7.86

**gPROMS**
Not enough data

Quality of Support

**Aspen HYSYS**

8.5

8.532

**gPROMS**

7.2

7.212

Has the product been a good partner in doing business?

**Aspen HYSYS**

8.3

8.35

**gPROMS**
Not enough data

Product Direction (% positive)

**Aspen HYSYS**

7.7

7.731

**gPROMS**

6.5

6.510

Features

Show 2 feature categories with incomplete data

Oil and Gas[Hide 43 FeaturesShow 43 Features](javascript:void(0);)

Not enough data

Not enough data

Additional Functionality

Compliance Management

Not enough data

Not enough data

Inventory Management

Not enough data

Not enough data

Logistics Management

Not enough data

Not enough data

Resource Management

Not enough data

Not enough data

Role-Based Permissions

Not enough data

Not enough data

Forecasting

Not enough data

Not enough data

Data Visualization

Not enough data

Not enough data

Real-Time Monitoring

Not enough data

Not enough data

Mobile Alerts

Not enough data

Not enough data

Data Synchronization

Not enough data

Not enough data

Data Import/Export

Not enough data

Not enough data

Audit Management

Not enough data

Not enough data

Workflow Management

Not enough data

Not enough data

Invoice Management

Not enough data

Not enough data

Maintenance Management

Not enough data

Not enough data

Activity Tracking

Not enough data

Not enough data

Customizable Fields

Not enough data

Not enough data

Scheduling

Not enough data

Not enough data

Multi-Location

Not enough data

Not enough data

Forms Management

Not enough data

Not enough data

Inspection Management

Not enough data

Not enough data

API

Not enough data

Not enough data

Data Analysis Tools

Not enough data

Not enough data

Offline Access

Not enough data

Not enough data

Reporting & Statistics

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

Job Costing

Not enough data

Not enough data

Real-Time Updates

Not enough data

Not enough data

Generative AI

Not enough data

Not enough data

Third-Party Integrations

Not enough data

Not enough data

Real-Time Data

Not enough data

Not enough data

Field Mapping

Not enough data

Not enough data

Production Management

Not enough data

Not enough data

Accounting

Not enough data

Not enough data

Work Order Management

Not enough data

Not enough data

Equipment Management

Not enough data

Not enough data

Project Management

Not enough data

Not enough data

Customizable Reports

Not enough data

Not enough data

Document Management

Not enough data

Not enough data

Job Management

Not enough data

Not enough data

Asset Tracking

Not enough data

Not enough data

Mobile Access

Not enough data

Not enough data

For Oil & Gas

Not enough data

Not enough data

Oil and Gas Simulation and Modeling[Hide 2 FeaturesShow 2 Features](javascript:void(0);)

Not enough data

Not enough data

Agentic AI - Oil and Gas Simulation and Modeling

Adaptive Learning

Not enough data

Not enough data

Decision Making

Not enough data

Not enough data

User Insights

Reviewers' Company Size

[![Aspen HYSYS](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_9559b073cabbd8f5db1d7e5636e38ee9/aspen-hysys.jpg "Aspen HYSYS")](https://www.g2.com/products/aspen-hysys/reviews)

Aspen HYSYS

Small-Business(50 or fewer emp.)

26.3%

Mid-Market(51-1000 emp.)

44.7%

Enterprise(\> 1000 emp.)

28.9%

[![gPROMS](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_cb9c5677b024836ebfb53ae19af56f0c/gproms.png "gPROMS")](https://www.g2.com/products/gproms/reviews)

gPROMS

Small-Business(50 or fewer emp.)

43.5%

Mid-Market(51-1000 emp.)

30.4%

Enterprise(\> 1000 emp.)

26.1%

Small-Business

(50 or fewer emp.)

26.3%

43.5%

Mid-Market

(51-1000 emp.)

44.7%

30.4%

Enterprise

(\> 1000 emp.)

28.9%

26.1%

Reviewers' Industry

[![Aspen HYSYS](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_9559b073cabbd8f5db1d7e5636e38ee9/aspen-hysys.jpg "Aspen HYSYS")](https://www.g2.com/products/aspen-hysys/reviews)
Aspen HYSYS

Chemicals

34.2%

Oil & Energy

31.6%

Mechanical or Industrial Engineering

7.9%

Utilities

5.3%

Higher Education

5.3%

Other

15.8%

[![gPROMS](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_cb9c5677b024836ebfb53ae19af56f0c/gproms.png "gPROMS")](https://www.g2.com/products/gproms/reviews)
gPROMS

Chemicals

43.5%

Research

21.7%

Mechanical or Industrial Engineering

8.7%

Higher Education

8.7%

Program Development

4.3%

Other

13.0%

FAQs

## Aspen HYSYS vs gPROMS FAQs

Generated using AI

Last updated: August 14, 2026

### What is the difference between gPROMS vs Aspen HYSYS?

Aspen HYSYS stands out for higher overall satisfaction and support scores, while gPROMS is favored for advanced custom modeling flexibility.

| [gPROMS](https://www.g2.com/products/gproms/reviews) | [Aspen HYSYS](https://www.g2.com/products/aspen-hysys/reviews) |
| --- | --- |
| 4.3/5 (25 reviews) | 4.5/5 (45 reviews) |
| Mid-Market | Small-Business |
| — | 8.1 |
| 7.2 | 8.5 |
| Advanced custom modeling and dynamic simulation capabilities | Comprehensive process simulation with a user-friendly interface and extensive thermodynamic packages |

### How do the pricing models of gPROMS and Aspen HYSYS compare?

Aspen HYSYS is rated higher for value, with reviewers expressing greater satisfaction with its pricing relative to gPROMS.

- **gPROMS:** In recent reviews, several users mention that gPROMS is considered expensive and requires a significant investment to master.
- **Aspen HYSYS:** Reviewers note that while Aspen HYSYS is not free and can be costly, its extensive features and ease of use justify the price for many organizations.

### What are the best alternatives to gPROMS and Aspen HYSYS?

The top three alternatives to gPROMS and Aspen HYSYS are Surfer, CHEMCAD, and Aspen Plus.

| Product | G2 Rating (reviews) | Largest Segment | Pricing Insight | Top Reviewer-Cited Strength |
| --- | --- | --- | --- | --- |
| [gPROMS](https://www.g2.com/products/gproms/reviews) | 4.3/5 (25 reviews) | Mid-Market | Expensive, requires investment to master | Advanced custom modeling and dynamic simulation |
| [Aspen HYSYS](https://www.g2.com/products/aspen-hysys/reviews) | 4.5/5 (45 reviews) | Small-Business | Not free, but features justify cost for many | User-friendly interface, extensive thermodynamic packages |
| [Surfer](https://www.g2.com/products/surfer/reviews) | 4.6/5 (126 reviews) | Enterprise | — | — |
| [CHEMCAD](https://www.g2.com/products/chemcad/reviews) | 4.0/5 (10 reviews) | — | — | — |

### Which Oil and Gas Simulation and Modeling features should I prioritize when comparing gPROMS and Aspen HYSYS?

Buyers should prioritize dynamic simulation, custom modeling flexibility, thermodynamic package breadth, user interface usability, and support quality when comparing gPROMS and Aspen HYSYS.

- **Dynamic simulation:** gPROMS is frequently cited for its advanced dynamic simulation and ability to solve complex ODEs and PDEs; Aspen HYSYS is also used for dynamic process simulation but is more often praised for steady-state scenarios.
- **Custom modeling flexibility:** gPROMS reviewers highlight the ability to create custom models and implement user-defined equations, while Aspen HYSYS is noted for its extensive built-in unit operations and refinery-specific features.
- **Thermodynamic package breadth:** Aspen HYSYS is praised for a wide range of thermodynamic packages and specialized process modules, supporting diverse oil and gas scenarios.
- **User interface usability:** Aspen HYSYS scores higher on Ease of Use (8.5 vs 7.6), with reviewers describing it as more intuitive and visually representative.
- **Support quality:** Aspen HYSYS leads in Quality of Support (8.5 vs 7.2), with reviewers more satisfied with available help and documentation.

### What are the pros and cons of gPROMS vs Aspen HYSYS?

gPROMS is strongest for advanced custom modeling and dynamic simulation, while Aspen HYSYS excels in user-friendliness and comprehensive process simulation for oil and gas.

- **gPROMS strengths:** Advanced custom modeling, dynamic simulation, ability to solve complex ODEs and PDEs, and flexibility for non-standard unit operations.
- **gPROMS trade-offs:** Steep learning curve, proprietary language syntax, less intuitive UI, and less effective user support compared to Aspen HYSYS.
- **Aspen HYSYS strengths:** User-friendly interface, extensive thermodynamic packages, broad process simulation capabilities, and high satisfaction with support and documentation.
- **Aspen HYSYS trade-offs:** Can be expensive, initial setup and thermodynamic package selection may be confusing for beginners, and occasional performance issues with large models.

### Is gPROMS or Aspen HYSYS better for small businesses?

Aspen HYSYS is a better fit for small businesses, as it is most popular in the Small-Business segment and receives strong satisfaction scores from that group.

- **gPROMS:** Most popular with Mid-Market companies, with reviewers noting a steeper learning curve and higher investment required.
- **Aspen HYSYS:** Most popular with Small-Business users, who highlight its user-friendly interface and broad applicability for oil and gas process simulation.

### Which Oil and Gas Simulation and Modeling platform has better integrations?

Reviewers do not cite a clear winner for integrations between gPROMS and Aspen HYSYS.

- **gPROMS:** No recent reviewer-cited integrations.
- **Aspen HYSYS:** Reviewers mention integration with Aspen EDR and MS Excel in recent reviews.

### How do gPROMS and Aspen HYSYS compare on customer support?

Aspen HYSYS outperforms gPROMS on Quality of Support by a material margin of 1.3 points (8.5 vs 7.2).

- **gPROMS:** Reviewers describe support as less effective, with some noting difficulty finding help and a smaller user community.
- **Aspen HYSYS:** Reviewers consistently praise the help menu, documentation, and support responsiveness, with many citing positive experiences and high satisfaction.

### Which is easier to implement, gPROMS or Aspen HYSYS?

Aspen HYSYS is easier to implement, with an Ease of Setup score of 8.1 and multiple reviewers highlighting its guided setup and intuitive interface.

- **gPROMS:** Reviewers note a steep learning curve and the need for significant training to master the software.
- **Aspen HYSYS:** Reviewers describe the setup process as well-guided, simple to use, and intuitive, with high satisfaction scores for implementation.

Alternatives

**Aspen HYSYS Alternatives**

 ![CHEMCAD](https://images.g2crowd.com/uploads/product/hd_favicon/134a394604c221c99dd6784694d6af6e/chemcad.svg "CHEMCAD")

[
CHEMCAD
](/products/chemcad/reviews)

 ![Surfer](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_91ab311f30fa76587408489170d4624c/surfer.png "Surfer")

[
Surfer
](/products/surfer/reviews)

 ![Petrel E&P Software Platform](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_eb44e7f38828e8cd816292354dc45ada/schlumberger-petrel-e-p-software-platform.png "Petrel E&P Software Platform")

[
Petrel E&P Software Platform
](/products/schlumberger-petrel-e-p-software-platform/reviews)

 ![AFT Fathom](https://images.g2crowd.com/uploads/product/hd_favicon/bf6b9752e6f8a48cfe7a3708c00773fa/aft-fathom.svg "AFT Fathom")

[
AFT Fathom
](/products/aft-fathom/reviews)

**gPROMS Alternatives**

 ![Surfer](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_91ab311f30fa76587408489170d4624c/surfer.png "Surfer")

[
Surfer
](/products/surfer/reviews)

 ![CHEMCAD](https://images.g2crowd.com/uploads/product/hd_favicon/134a394604c221c99dd6784694d6af6e/chemcad.svg "CHEMCAD")

[
CHEMCAD
](/products/chemcad/reviews)

 ![Petrel E&P Software Platform](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_eb44e7f38828e8cd816292354dc45ada/schlumberger-petrel-e-p-software-platform.png "Petrel E&P Software Platform")

[
Petrel E&P Software Platform
](/products/schlumberger-petrel-e-p-software-platform/reviews)

 ![AFT Fathom](https://images.g2crowd.com/uploads/product/hd_favicon/bf6b9752e6f8a48cfe7a3708c00773fa/aft-fathom.svg "AFT Fathom")

[
AFT Fathom
](/products/aft-fathom/reviews)

## Aspen HYSYS vs gPROMS

- Reviewers felt that Aspen HYSYS meets the needs of their business better than gPROMS.
- When comparing quality of ongoing product support, reviewers felt that Aspen HYSYS is the preferred option.
- For feature updates and roadmaps, our reviewers preferred the direction of Aspen HYSYS over gPROMS.