# Unit Conversion Calculator $ vs Bona Dea

The clearest difference is ads: Bona Dea at none against Unit Conversion Calculator $'s shown. Bona Dea also leads on update cadence (every 2 months vs every 9 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Unit Conversion Calculator $ ships an update every 9 months, Bona Dea every 2 months. Both last shipped on October 28, 2026.

## The numbers

| Metric | Unit Conversion Calculator $ | Bona Dea |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/unit-conversion-calculator/id6742060456/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | Ad-supported | — |
| Size | 28 MB | 43 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [JanoGroup LLC](https://appshunter.io/developer/1781461557) | [Emilio Serna](https://appshunter.io/developer/1587429433) |

## What reviewers say

### Unit Conversion Calculator $

[App page](https://appshunter.io/ios/app/unit-conversion-calculator/id6742060456)

This app offers a comprehensive suite of tools for converting measurements across 14 categories and performing currency exchanges with live rates. It features historical comparisons, favorites, and sharing capabilities, making it useful for various daily tasks.

**Highlights:** 14 measurement conversion categories, Live currency exchange rates, Historical currency rate comparisons, Save favorite conversions, Offline measurement conversions, Metric and imperial units, Light, dark, and system appearance options

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

**In-app purchases:** none


### Bona Dea

[App page](https://appshunter.io/ios/app/bona-dea/id6743134834)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Unit Conversion Calculator $ free?

Unit Conversion Calculator $ is free to download, with no in-app purchases.

### Is Bona Dea free?

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

### Do Unit Conversion Calculator $ or Bona Dea have ads?

Unit Conversion Calculator $ shows ads; Bona Dea does not.

### Which is updated more often, Unit Conversion Calculator $ or Bona Dea?

Unit Conversion Calculator $ ships an update every 9 months, and Bona Dea every 2 months. Most recently, Unit Conversion Calculator $ was updated on October 28, 2026 and Bona Dea on October 28, 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.*