# Ad vs Conversion Calculator Units

The clearest difference is rating: Conversion Calculator Units at 4.7 against Ad's 3.9. Conversion Calculator Units also leads on ratings volume (5K vs 55). Ad's advantage is ads (none vs shown) and iOS requirement (8.0 vs 15.0). On price, review sentiment, update cadence and in-app purchases there is nothing between them.

Both are free to download. Ad sells 1 one-off in-app purchase and Conversion Calculator Units sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Conversion Calculator Units holds the better App Store score, 4.7 against 3.9. That said, the two scores are not equally well evidenced: Conversion Calculator Units has 5K ratings behind it against 55, so its average is the more settled of the two. Written reviews point the same way: 76% of Ad's written reviews are positive against 82% of Conversion Calculator Units's.

Ad ships an update every 3 months, Conversion Calculator Units every 2 months. The most recent releases landed on October 21, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Ad | Conversion Calculator Units |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (55 ratings)](https://appshunter.io/ios/app/ad-free-unit-converter/id379646417/reviews) | **[4.7 (5K ratings)](https://appshunter.io/ios/app/conversion-calculator-units/id727632233/reviews)** |
| Number of ratings | 55 | **5K** |
| Positive reviews | 75.7% of reviews | **82.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 7 MB | 41 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [William Jockusch](https://appshunter.io/developer/342126227) | [RV AppStudios LLC](https://appshunter.io/developer/340181308) |

## What reviewers say

### Ad

[App page](https://appshunter.io/ios/app/ad-free-unit-converter/id379646417)

A straightforward unit converter designed for ease of use and efficiency. It offers a wide range of conversion options without any advertisements, saving battery and data. All conversions are performed on a single, intuitive screen.

**Highlights:** Ad-free experience, Intuitive single-screen interface, Supports acceleration, angle, area, density, distance, energy, force, mass, power, pressure, speed, temperature, time, and volume, Saves bandwidth and battery life, Easy to use

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Upgrade | $0.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 🔒 No ads
- ✨ Great app overall
- 🚀 Efficient and fast
- 💻 Useful for everyday conversions

**What reviewers complain about**

- 🐛 Crashes on newer iOS versions
- 🔍 Missing some common units of measurement
- 🌐 Lacks support for non-US units

**Reported bugs**

- Crashes on iPhone XS Max
- Conversion errors for larger values
- Incompatible with latest iOS updates

**Requested features**

- Add more unit conversion options
- Implement a favorites/recent list
- Improve UI for easier navigation
- Add currency conversion feature
- Improve accuracy of some conversions


### 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 Ad free?

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

### Is Conversion Calculator Units free?

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

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

Conversion Calculator Units is rated higher. Ad averages 3.9 out of 5 from 55 ratings, while Conversion Calculator Units averages 4.7 from 5K ratings.

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

Conversion Calculator Units shows ads; Ad does not.

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

Ad ships an update every 3 months, and Conversion Calculator Units every 2 months. Most recently, Ad was updated on October 21, 2026 and Conversion Calculator Units on October 28, 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.*