# Oil Tanker vs Petroleum VCF Basic

The clearest difference is price: Petroleum VCF Basic at Free against Oil Tanker's $4.99. Oil Tanker's advantage is iOS requirement (13.0 vs 16.1). On update cadence, ads, in-app purchases and device support there is nothing between them.

Petroleum VCF Basic is free to download; Oil Tanker costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on January 14, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Oil Tanker | Petroleum VCF Basic |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/petroleum-vcf-basic/id6475608625/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Free |
| Size | 29 MB | 2 MB |
| Requires iOS | **13.0** | 16.1 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Andrey Andreyev](https://appshunter.io/developer/1418253369) | [Jose Maldonado](https://appshunter.io/developer/1724473480) |

## What reviewers say

### Oil Tanker

[App page](https://appshunter.io/ios/app/oil-tanker/id6468249878)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Oil Tanker free?

Oil Tanker costs $4.99, with no in-app purchases.

### Is Petroleum VCF Basic free?

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

### Do Oil Tanker or Petroleum VCF Basic have ads?

Neither Oil Tanker nor Petroleum VCF Basic shows ads.

### Which is updated more often, Oil Tanker or Petroleum VCF Basic?

Oil Tanker ships an update every 2 months, and Petroleum VCF Basic every 2 months. Most recently, Oil Tanker was updated on January 14, 2026 and Petroleum VCF Basic on June 4, 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.*