# Drilling Hydraulics (Basic) vs rotate by RotationOS

The clearest difference is price: rotate by RotationOS at Free against Drilling Hydraulics (Basic)'s $4.99. rotate by RotationOS also leads on update cadence (every 5 days vs every 14 months). Drilling Hydraulics (Basic)'s advantage is in-app purchases (none vs 2) and device support (3 vs 1). On ads there is nothing between them.

rotate by RotationOS is free to download; Drilling Hydraulics (Basic) costs $4.99 up front. rotate by RotationOS sells 2 in-app purchases, starting at $2.99 per month. Drilling Hydraulics (Basic) asks for nothing beyond the download.

Drilling Hydraulics (Basic) ships an update every 14 months, rotate by RotationOS every 5 days. The most recent releases landed on September 23, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Drilling Hydraulics (Basic) | rotate by RotationOS |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 5 days** |
| Size | 7 MB | 47 MB |
| Requires iOS | **10.3** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Carlos Moura](https://appshunter.io/developer/407501202) | [RotationOS LLC](https://appshunter.io/developer/6795548528) |

## What reviewers say

### Drilling Hydraulics (Basic)

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

**Features:** macOS Compatibility

**In-app purchases:** none


### rotate by RotationOS

[App page](https://appshunter.io/ios/app/rotate-by-rotationos/id6795548526)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| rotate Plus | $2.99 | per month |
| rotate Pro | $5.99 | per month |


## Frequently asked questions

### Is Drilling Hydraulics (Basic) free?

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

### Is rotate by RotationOS free?

rotate by RotationOS is free to download, with in-app purchases available.

### Do Drilling Hydraulics (Basic) or rotate by RotationOS have ads?

Neither Drilling Hydraulics (Basic) nor rotate by RotationOS shows ads.

### Which is updated more often, Drilling Hydraulics (Basic) or rotate by RotationOS?

Drilling Hydraulics (Basic) ships an update every 14 months, and rotate by RotationOS every 5 days. Most recently, Drilling Hydraulics (Basic) was updated on September 23, 2026 and rotate by RotationOS on September 18, 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.*