# Petroleum VCF Basic vs Petroleum Engineering+

The clearest difference is in-app purchases: Petroleum VCF Basic at none against Petroleum Engineering+'s 6. Petroleum Engineering+'s advantage is update cadence (monthly vs every 2 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Petroleum Engineering+ sells 6 in-app purchases, starting at $9.99 per month. Petroleum VCF Basic asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Petroleum VCF Basic against 5.0 for Petroleum Engineering+. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Petroleum VCF Basic ships an update every 2 months, Petroleum Engineering+ monthly. The most recent releases landed on June 4, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Petroleum VCF Basic | Petroleum Engineering+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/petroleum-vcf-basic/id6475608625/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/petroleum-engineering-plus/id6746214573/reviews) |
| Number of ratings | **2** | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 18 MB |
| Requires iOS | **16.1** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Jose Maldonado](https://appshunter.io/developer/1724473480) | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) |

## What reviewers say

### Petroleum VCF Basic

[App page](https://appshunter.io/ios/app/petroleum-vcf-basic/id6475608625)

Calculate volume and density changes for various petroleum products due to temperature and pressure variations. Supports crude oil, refined products, and specialized oils. Requires minimum density and temperature data, with optional volume input.

**Highlights:** Volume and density change calculations, Supports crude oil, refined products, and lube oils, Calculations based on temperature and pressure, Handles various density units, Optional volume input for corrected volume, Saves and recalls last performed calculation

**In-app purchases:** none


### Petroleum Engineering+

[App page](https://appshunter.io/ios/app/petroleum-engineering-plus/id6746214573)

Master petroleum engineering concepts through engaging quizzes covering a wide range of topics from geology to production. Ideal for students and professionals seeking to enhance their knowledge and skills in the oil and gas industry.

**Highlights:** Comprehensive quiz coverage, Topics from geology to production, Boost knowledge and skills, Engaging learning experience, Suitable for students and professionals

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $9.99 | per month |
| 6 Months | $19.99 | per 6 months |
| 1 Year | $29.99 | per year |
| 1500 | $0.99 | one-time |
| 3500 | $1.99 | one-time |
| 9000 | $3.99 | one-time |


## Frequently asked questions

### Is Petroleum VCF Basic free?

Petroleum VCF Basic is free to download, with no in-app purchases.

### Is Petroleum Engineering+ free?

Petroleum Engineering+ is free to download, with in-app purchases available.

### Which has better reviews, Petroleum VCF Basic or Petroleum Engineering+?

Petroleum VCF Basic and Petroleum Engineering+ are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Petroleum VCF Basic or Petroleum Engineering+ have ads?

Neither Petroleum VCF Basic nor Petroleum Engineering+ shows ads.

### Which is updated more often, Petroleum VCF Basic or Petroleum Engineering+?

Petroleum VCF Basic ships an update every 2 months, and Petroleum Engineering+ monthly. Most recently, Petroleum VCF Basic was updated on June 4, 2026 and Petroleum Engineering+ on September 23, 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.*