# Conversions vs RigCalcPro

The clearest difference is in-app purchases: Conversions at none against RigCalcPro's 2. RigCalcPro's advantage is ads (none vs shown) and update cadence (every 3 months vs every 44 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. RigCalcPro sells 2 in-app purchases, starting at $1.99 per 7 days. Conversions asks for nothing beyond the download.

Conversions ships an update every 44 months, RigCalcPro every 3 months. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Conversions | RigCalcPro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/conversions-unit-converter/id1468987994/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 44 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 37 MB | 19 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Joshua Griffin](https://appshunter.io/developer/1441925277) | [Ersel Tarhan](https://appshunter.io/developer/1093545232) |

## What reviewers say

### Conversions

[App page](https://appshunter.io/ios/app/conversions-unit-converter/id1468987994)

This utility app offers a straightforward way to convert between various units of measurement. It supports common categories like length, speed, volume, mass, area, temperature, and time. More conversion types are planned for future updates.

**Highlights:** Unit conversion, Length conversion, Speed conversion, Volume conversion, Mass conversion, Area conversion, Temperature conversion, Time conversion

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

**In-app purchases:** none


### RigCalcPro

[App page](https://appshunter.io/ios/app/rigcalcpro-rigging-calculator/id6794874495)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $1.99 | per 7 days |
| Annual Premium | $19.99 | per year |


## Frequently asked questions

### Is Conversions free?

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

### Is RigCalcPro free?

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

### Do Conversions or RigCalcPro have ads?

Conversions shows ads; RigCalcPro does not.

### Which is updated more often, Conversions or RigCalcPro?

Conversions ships an update every 44 months, and RigCalcPro every 3 months. Most recently, Conversions was updated on November 6, 2026 and RigCalcPro on November 7, 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.*