# PDVL vs Petroleum VCF Basic

The clearest difference is in-app purchases: Petroleum VCF Basic at none against PDVL's 1. Petroleum VCF Basic also leads on update cadence (every 2 months vs every 10 months). PDVL's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. PDVL sells 1 one-off in-app purchase. Petroleum VCF Basic asks for nothing beyond the download.

PDVL ships an update every 10 months, Petroleum VCF Basic every 2 months. The most recent releases landed on October 2, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | PDVL | Petroleum VCF Basic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/petroleum-vcf-basic/id6475608625/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 2 MB | 2 MB |
| Requires iOS | **15.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Appsaur.com Pte Ltd](https://appshunter.io/developer/1471583826) | [Jose Maldonado](https://appshunter.io/developer/1724473480) |

## What reviewers say

### PDVL

[App page](https://appshunter.io/ios/app/pdvl/id1631744678)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 300 PDVL Questions | $9.99 | one-time |


### 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 PDVL free?

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

### Is Petroleum VCF Basic free?

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

### Do PDVL or Petroleum VCF Basic have ads?

Neither PDVL nor Petroleum VCF Basic shows ads.

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

PDVL ships an update every 10 months, and Petroleum VCF Basic every 2 months. Most recently, PDVL was updated on October 2, 2026 and Petroleum VCF Basic on October 3, 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.*