# Units vs UC

The clearest difference is review sentiment: Units at 60% against UC's 0%. Units also leads on rating (4.1 vs 3.0) and ratings volume (51 vs 1). UC's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Units sells 3 one-off in-app purchases. UC asks for nothing beyond the download.

Units holds the better App Store score, 4.1 against 3.0. That said, the two scores are not equally well evidenced: Units has 51 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 60% of Units's written reviews are positive against 0% of UC's.

Units ships an update monthly, UC every 2 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Units | UC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (51 ratings)](https://appshunter.io/ios/app/units-pro-unit-converter/id284574017/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/uc-units-converter/id1368701985/reviews) |
| Number of ratings | **51** | 1 |
| Positive reviews | **60.1% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 86 MB | 31 MB |
| Requires iOS | 17.0 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Homegrown Software Ltd](https://appshunter.io/developer/406645730) | [ItCarst](https://appshunter.io/developer/629501837) |

## What reviewers say

### Units

[App page](https://appshunter.io/ios/app/units-pro-unit-converter/id284574017)

Easily convert between hundreds of units across 43 categories, including currency with daily updated rates. Customize your workflow by hiding or reordering units and categories.

**Highlights:** Hundreds of units across 43 categories, Daily updated currency exchange rates, Hide unused units, Reorder units and categories, Universal app support (iPhone, iPod touch, iPad)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $4.99 | one-time |

**What reviewers like**

- 🚀 Efficient and fast conversions
- 👍 Comprehensive list of units
- 🔍 Customizable unit selection
- 💰 Free app with optional paid version
- 🔧 Useful for engineering and technical work

**What reviewers complain about**

- 🐛 Crashes and stability issues
- 🕰️ Outdated currency conversion rates
- 🔍 Too many unit categories, hard to navigate
- 💰 Ads in free version
- 📏 Ruler feature not accurate on some devices

**Reported bugs**

- Crashes when clearing input fields
- Numerical keypad covers conversion results
- Incompatibility issues with newer iOS versions
- Ruler measurements not accurate on all devices

**Requested features**

- Add nautical units (miles, knots)
- Improve currency conversion accuracy and updates
- Allow customization of visible unit categories
- Add more clothing/shoe size conversions
- Improve user interface and search functionality


### UC

[App page](https://appshunter.io/ios/app/uc-units-converter/id1368701985)

This app offers a straightforward way to convert units across various categories. Its user-friendly interface and simple design make conversions quick and effortless, requiring no complicated searches or navigation. It works offline and is free to download and use.

**Highlights:** Simple and user-friendly interface, Multiple unit conversions, Offline functionality, Free to download and use, Covers time, speed, area, volume, mass, length, temperature, and more

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Units free?

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

### Is UC free?

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

### Which has better reviews, Units or UC?

Units is rated higher. Units averages 4.1 out of 5 from 51 ratings, while UC averages 3.0 from 1 ratings.

### Do Units or UC have ads?

Units shows ads; UC does not.

### Which is updated more often, Units or UC?

Units ships an update monthly, and UC every 2 months. Most recently, Units was updated on November 6, 2026 and UC on November 2, 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.*