# Unit Converter Pro Calculator vs RangePilot

The clearest difference is in-app purchases: Unit Converter Pro Calculator at none against RangePilot's 1. Unit Converter Pro Calculator also leads on iOS requirement (13.0 vs 26.5). RangePilot's advantage is ads (none vs shown) and update cadence (every 2 days vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. RangePilot sells 1 one-off in-app purchase. Unit Converter Pro Calculator asks for nothing beyond the download.

Unit Converter Pro Calculator ships an update every 3 weeks, RangePilot every 2 days. The most recent releases landed on November 7, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Unit Converter Pro Calculator | RangePilot |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Size | 32 MB | 8 MB |
| Requires iOS | **13.0** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Barnasoba, S.L.](https://appshunter.io/developer/1823395954) | [Ontography AB](https://appshunter.io/developer/6773331200) |

## What reviewers say

### Unit Converter Pro Calculator

[App page](https://appshunter.io/ios/app/unit-converter-pro-calculator/id1488398127)

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

**In-app purchases:** none


### RangePilot

[App page](https://appshunter.io/ios/app/rangepilot/id6773331198)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock RangePilot | $0.49 | one-time |


## Frequently asked questions

### Is Unit Converter Pro Calculator free?

Unit Converter Pro Calculator is free to download, with no in-app purchases.

### Is RangePilot free?

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

### Do Unit Converter Pro Calculator or RangePilot have ads?

Unit Converter Pro Calculator shows ads; RangePilot does not.

### Which is updated more often, Unit Converter Pro Calculator or RangePilot?

Unit Converter Pro Calculator ships an update every 3 weeks, and RangePilot every 2 days. Most recently, Unit Converter Pro Calculator was updated on November 7, 2026 and RangePilot on October 25, 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.*