# Converter vs Conversion Calculator Units

The clearest difference is in-app purchases: Converter at none against Conversion Calculator Units's 1. Converter also leads on ads (none vs shown) and rating (4.9 vs 4.7). Conversion Calculator Units's advantage is ratings volume (5K vs 897). On price, update cadence, device support and iOS requirement there is nothing between them.

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

Converter holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Conversion Calculator Units has 5K ratings behind it against 897, so its average is the more settled of the two. Written reviews point the same way: 96% of Converter's written reviews are positive against 82% of Conversion Calculator Units's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 11, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Converter | Conversion Calculator Units |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (897 ratings)](https://appshunter.io/ios/app/converter-universal-conversion/id423521445/reviews)** | [4.7 (5K ratings)](https://appshunter.io/ios/app/conversion-calculator-units/id727632233/reviews) |
| Number of ratings | 897 | **5K** |
| Positive reviews | **96.0% of reviews** | 82.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 37 MB | 41 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Trelleborg Sealing Solutions](https://appshunter.io/developer/396863758) | [RV AppStudios LLC](https://appshunter.io/developer/340181308) |

## What reviewers say

### Converter

[App page](https://appshunter.io/ios/app/converter-universal-conversion/id423521445)

This app offers a comprehensive unit and hardness conversion tool with an easy-to-use interface. It includes currency conversion with updated exchange rates, over 300 engineering and scientific units, and a specialized hardness converter. Additional features like timezone conversion, pace calculation, and a standard calculator enhance its utility.

**Highlights:** Currency converter with live exchange rates, Over 300 engineering and scientific units, Specialized hardness converter, Timezone conversion, Running pace calculator, Integrated standard calculator, Conversion history log

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Accurate and fast conversions
- 💡 Comprehensive coverage of units and categories
- 🔒 No ads or hidden fees
- 💡 Useful currency converter

**What reviewers complain about**

- 🐛 Currency conversion rates can be outdated
- 🔍 Difficult to find specific conversions due to large number of options
- 💡 Lack of ability to set favorite conversions as default

**Reported bugs**

- Occasional crashes on startup for non-English/German users
- Conversion from meters to feet does not show inches

**Requested features**

- Add fuel efficiency conversions
- Allow users to set favorite conversions as default
- Improve currency conversion rate updates


### Conversion Calculator Units

[App page](https://appshunter.io/ios/app/conversion-calculator-units/id727632233)

This app offers a simple and powerful way to convert between over 140 units across 12 categories. Easily switch between units, customize your experience with themes, and share your results.

**Highlights:** Converts over 140 units, Supports 12 conversion categories, Customizable themes, Drag and set unit positions, Add units to favorites, Share converted units via email

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |

**What reviewers like**

- 👍 User-friendly
- 🚀 Easy to use
- 💡 Helpful for learning metric system
- 👍 Great for conversions
- 👍 Intuitive interface

**What reviewers complain about**

- 🐛 Ads disrupt usage
- 🐛 Difficult to change units
- 🐛 Lacks portrait mode
- 🐛 Upside-down orientation issues
- 🐛 Cluttered UI design

**Reported bugs**

- Ads not removed after purchase
- Incorrect unit conversions

**Requested features**

- Add pressure conversion units
- Include a basic calculator function
- Implement multi-language support
- Allow customization of unit order


## Frequently asked questions

### Is Converter free?

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

### Is Conversion Calculator Units free?

Conversion Calculator Units is free to download, with in-app purchases available.

### Which has better reviews, Converter or Conversion Calculator Units?

Converter is rated higher. Converter averages 4.9 out of 5 from 897 ratings, while Conversion Calculator Units averages 4.7 from 5K ratings.

### Do Converter or Conversion Calculator Units have ads?

Conversion Calculator Units shows ads; Converter does not.

### Which is updated more often, Converter or Conversion Calculator Units?

Converter ships an update every 2 months, and Conversion Calculator Units every 2 months. Most recently, Converter was updated on October 11, 2026 and Conversion Calculator Units on October 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*