# Unit Converter HD. vs Basic Unit Converter

The clearest difference is rating: Unit Converter HD. at 4.7 against Basic Unit Converter's 4.0. Unit Converter HD. also leads on ratings volume (644 vs 2). Basic Unit Converter's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, review sentiment and device support there is nothing between them.

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

Unit Converter HD. holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Unit Converter HD. has 644 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 94% of Unit Converter HD.'s written reviews are positive against 100% of Basic Unit Converter's, so the app with the better star average is not the one people write more warmly about.

Unit Converter HD. ships an update every 2 months, Basic Unit Converter every 2 weeks. The most recent releases landed on September 29, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Unit Converter HD. | Basic Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (644 ratings)](https://appshunter.io/ios/app/unit-converter-hd/id481973377/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/basic-unit-converter/id1547306354/reviews) |
| Number of ratings | **644** | 2 |
| Positive reviews | 93.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 86 MB | 84 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [良峰 侯](https://appshunter.io/developer/654444245) | [Double Theory Ltd](https://appshunter.io/developer/1525279410) |

## What reviewers say

### Unit Converter HD.

[App page](https://appshunter.io/ios/app/unit-converter-hd/id481973377)

Easily convert over 700 units across 30 categories with this powerful tool. It offers a user-friendly interface, dark mode support, and a backspace key for quick corrections. Save time on all your measurement conversion needs.

**Highlights:** 700+ Units of Measure, 30 Conversion Categories, Easy-to-Use Interface, Dark Mode Support, Backspace Key

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

**In-app purchases (1)**

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

**What reviewers like**

- 👍 Easy to use
- 🚀 Handy and convenient
- 💡 Comprehensive set of conversions
- 🚀 Very useful app
- 👍 Intuitive design

**What reviewers complain about**

- 🐛 Occasional crashes or freezing issues
- 💡 Could be more intuitive for some users
- 🔒 Requires horizontal orientation

**Reported bugs**

- Freezing or crashing on some devices
- Display issues with certain units

**Requested features**

- Add support for US weights (tons, lbs., oz.)
- Implement portrait mode support
- Provide more customization options


### Basic Unit Converter

[App page](https://appshunter.io/ios/app/basic-unit-converter/id1547306354)

Easily convert between various units of measurement across 12 categories including length, mass, temperature, and digital storage. Ideal for cooking, personal measurements, or general calculations.

**Highlights:** 12 conversion categories, Supports metric and imperial units, Instant calculation, Intuitive interface, Wide range of units

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

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter HD. free?

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

### Is Basic Unit Converter free?

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

### Which has better reviews, Unit Converter HD. or Basic Unit Converter?

Unit Converter HD. is rated higher. Unit Converter HD. averages 4.7 out of 5 from 644 ratings, while Basic Unit Converter averages 4.0 from 2 ratings.

### Do Unit Converter HD. or Basic Unit Converter have ads?

Unit Converter HD. shows ads; Basic Unit Converter does not.

### Which is updated more often, Unit Converter HD. or Basic Unit Converter?

Unit Converter HD. ships an update every 2 months, and Basic Unit Converter every 2 weeks. Most recently, Unit Converter HD. was updated on September 29, 2026 and Basic Unit Converter on September 19, 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.*