# Converter vs Unit Converter Calculator Pro

The clearest difference is in-app purchases: Converter at none against Unit Converter Calculator Pro's 4. Converter also leads on ads (none vs shown) and review sentiment (94% vs 76%). Unit Converter Calculator Pro's advantage is update cadence (monthly vs every 2 months) and iOS requirement (13.0 vs 15.6). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. Unit Converter Calculator Pro sells 4 one-off in-app purchases. Converter asks for nothing beyond the download.

Converter holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 980 and 992 respectively. Written reviews point the same way: 94% of Converter's written reviews are positive against 76% of Unit Converter Calculator Pro's.

Converter ships an update every 2 months, Unit Converter Calculator Pro monthly. The most recent releases landed on October 20, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Converter | Unit Converter Calculator Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (980 ratings)](https://appshunter.io/ios/app/converter-universal-conversion/id423521445/reviews)** | [4.7 (992 ratings)](https://appshunter.io/ios/app/unit-converter-calculator-pro/id1343845631/reviews) |
| Number of ratings | 980 | **992** |
| Positive reviews | **93.9% of reviews** | 76.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 37 MB | 37 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [Trelleborg Sealing Solutions](https://appshunter.io/developer/396863758) | [Rome Rock LLC](https://appshunter.io/developer/1190244007) |

## 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


### Unit Converter Calculator Pro

[App page](https://appshunter.io/ios/app/unit-converter-calculator-pro/id1343845631)

Easily convert between metric and imperial units for a wide range of measurements including area, speed, temperature, and weight. Supports scientific prefixes and offers a history of your conversions. No internet connection required.

**Highlights:** Metric to Imperial unit conversion, Imperial to Metric unit conversion, Area, speed, temperature, volume, weight conversions, Scientific prefixes support, Conversion history, Offline functionality

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads & Unlock Themes | $2.99 | one-time |
| Remove Ads & Unlock Themes 1 | $4.99 | one-time |
| Remove Ads & Unlock Themes 2 | $6.99 | one-time |
| Remove Ads & Unlock Themes 3 | $9.99 | one-time |

**What reviewers like**

- 🚀 Easy & accurate
- 🚀 Excellent Tool
- 👍 Goog for social
- 👍 Excelente para mi trabajo
- 👍 Sencillez

**What reviewers complain about**

- 👎 Hard to use interface
- 👎 Lacks pressure units
- 👎 No reverse button
- 👎 Metric to imperial format not user-friendly

**Reported bugs**

- 🐛 Changing to something else

**Requested features**

- 💡 Favorite conversations
- 💡 Color-coded sections
- 💡 Money conversion


## Frequently asked questions

### Is Converter free?

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

### Is Unit Converter Calculator Pro free?

Unit Converter Calculator Pro is free to download, with in-app purchases available.

### Which has better reviews, Converter or Unit Converter Calculator Pro?

Converter is rated higher. Converter averages 4.9 out of 5 from 980 ratings, while Unit Converter Calculator Pro averages 4.7 from 992 ratings.

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

Unit Converter Calculator Pro shows ads; Converter does not.

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

Converter ships an update every 2 months, and Unit Converter Calculator Pro monthly. Most recently, Converter was updated on October 20, 2026 and Unit Converter Calculator Pro on October 22, 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.*