# Drilling Hydraulics (Basic) vs Petroleum Field Calculator

The clearest difference is update cadence: Petroleum Field Calculator at every 5 weeks against Drilling Hydraulics (Basic)'s every 14 months. Petroleum Field Calculator also leads on price ($0.99 vs $4.99). Drilling Hydraulics (Basic)'s advantage is iOS requirement (10.3 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

Drilling Hydraulics (Basic) costs $4.99 and Petroleum Field Calculator $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Drilling Hydraulics (Basic) ships an update every 14 months, Petroleum Field Calculator every 5 weeks. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Drilling Hydraulics (Basic) | Petroleum Field Calculator |
| --- | --- | --- |
| Price | $4.99 | **$0.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 5 weeks** |
| Size | 7 MB | 4 MB |
| Requires iOS | **10.3** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Carlos Moura](https://appshunter.io/developer/407501202) | [Paul Femiak](https://appshunter.io/developer/412802291) |

## What reviewers say

### Drilling Hydraulics (Basic)

[App page](https://appshunter.io/ios/app/drilling-hydraulics-basic/id673992115)

**Features:** macOS Compatibility

**In-app purchases:** none


### Petroleum Field Calculator

[App page](https://appshunter.io/ios/app/petroleum-field-calculator/id1615163996)

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

**In-app purchases:** none


## Frequently asked questions

### Is Drilling Hydraulics (Basic) free?

Drilling Hydraulics (Basic) costs $4.99, with no in-app purchases.

### Is Petroleum Field Calculator free?

Petroleum Field Calculator costs $0.99, with no in-app purchases.

### Do Drilling Hydraulics (Basic) or Petroleum Field Calculator have ads?

Neither Drilling Hydraulics (Basic) nor Petroleum Field Calculator shows ads.

### Which is updated more often, Drilling Hydraulics (Basic) or Petroleum Field Calculator?

Drilling Hydraulics (Basic) ships an update every 14 months, and Petroleum Field Calculator every 5 weeks. Most recently, Drilling Hydraulics (Basic) was updated on October 10, 2026 and Petroleum Field Calculator on October 14, 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.*