# Pipe Offset Calculator Pro vs Arctan Calculator

The clearest difference is price: Arctan Calculator at Free against Pipe Offset Calculator Pro's $4.99. Arctan Calculator also leads on update cadence (every 12 months vs every 77 months). Pipe Offset Calculator Pro's advantage is iOS requirement (9.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

Arctan Calculator is free to download; Pipe Offset Calculator Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Pipe Offset Calculator Pro ships an update every 77 months, Arctan Calculator every 12 months. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Pipe Offset Calculator Pro | Arctan Calculator |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 77 months | **Every 12 months** |
| Size | 2 MB | 43 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) | [Stage Coding](https://appshunter.io/developer/1637068135) |

## What reviewers say

### Pipe Offset Calculator Pro

[App page](https://appshunter.io/ios/app/pipe-offset-calculator-pro/id1440265486)

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

**In-app purchases:** none


### Arctan Calculator

[App page](https://appshunter.io/ios/app/arctan-calculator/id1618657861)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pipe Offset Calculator Pro free?

Pipe Offset Calculator Pro costs $4.99, with no in-app purchases.

### Is Arctan Calculator free?

Arctan Calculator is free to download, with no in-app purchases.

### Do Pipe Offset Calculator Pro or Arctan Calculator have ads?

Neither Pipe Offset Calculator Pro nor Arctan Calculator shows ads.

### Which is updated more often, Pipe Offset Calculator Pro or Arctan Calculator?

Pipe Offset Calculator Pro ships an update every 77 months, and Arctan Calculator every 12 months. Most recently, Pipe Offset Calculator Pro was updated on October 7, 2026 and Arctan Calculator on October 15, 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.*