# Units vs Convertible

The clearest difference is rating: Convertible at 4.8 against Units's 4.1. Convertible also leads on in-app purchases (none vs 3) and ads (none vs shown). Units's advantage is update cadence (monthly vs every 2 months). On price, ratings volume and device support there is nothing between them.

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

Convertible holds the better App Store score, 4.8 against 4.1. Both are backed by a comparable volume of ratings — 50 and 101 respectively. Written reviews point the same way: 60% of Units's written reviews are positive against 89% of Convertible's.

Units ships an update monthly, Convertible every 2 months. The most recent releases landed on October 26, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Units | Convertible |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (50 ratings)](https://appshunter.io/ios/app/units-pro-unit-converter/id284574017/reviews) | **[4.8 (101 ratings)](https://appshunter.io/ios/app/convertible-unit-converter/id514233370/reviews)** |
| Number of ratings | 50 | **101** |
| Positive reviews | 60.0% of reviews | **89.2% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 86 MB | 12 MB |
| Requires iOS | 17.0 | **8.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Homegrown Software Ltd](https://appshunter.io/developer/406645730) | [Efecto Pty Ltd](https://appshunter.io/developer/331691709) |

## 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


### Convertible

[App page](https://appshunter.io/ios/app/convertible-unit-converter/id514233370)

This app offers a comprehensive unit and currency conversion tool with a visually appealing interface and extensive unit options. It supports standard and non-standard units, compound conversions, and fraction input, making it versatile for various needs.

**Highlights:** Extensive standard and non-standard unit conversions, Currency conversion with 161 currencies, Compound unit conversion, Fraction input and output, Adjustable decimal precision, Elegant interface with themes, iPad split view and Today Extension support

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 💻 Excellent user interface
- ⚙️ Comprehensive set of conversion units
- 🔍 Intuitive and easy to use
- 🎨 Customizable color themes
- 🕰️ Saves last conversion

**What reviewers complain about**

- 🐛 Occasional crashes or bugs
- 🔍 Navigation can be confusing at times
- 🔢 Lack of support for custom units

**Reported bugs**

- Conversion results not always accurate
- Crashes when trying to share conversion results

**Requested features**

- Add support for more measurement categories (e.g. fuel consumption, flow rate)
- Implement a search function to easily find units
- Provide a widget for quick access to conversions
- Add support for more languages


## Frequently asked questions

### Is Units free?

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

### Is Convertible free?

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

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

Convertible is rated higher. Units averages 4.1 out of 5 from 50 ratings, while Convertible averages 4.8 from 101 ratings.

### Do Units or Convertible have ads?

Units shows ads; Convertible does not.

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

Units ships an update monthly, and Convertible every 2 months. Most recently, Units was updated on October 26, 2026 and Convertible on October 23, 2026.

---

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