# Ultra Measure Master vs Conversion Calculator Units

The clearest difference is price: Conversion Calculator Units at Free against Ultra Measure Master's $29.99. Conversion Calculator Units also leads on ratings volume (5K vs 9) and update cadence (every 2 months vs every 11 months). Ultra Measure Master's advantage is in-app purchases (none vs 1) and ads (none vs shown). On review sentiment, device support and iOS requirement there is nothing between them.

Conversion Calculator Units is free to download; Ultra Measure Master costs $29.99 up front. Conversion Calculator Units sells 1 one-off in-app purchase. Ultra Measure Master asks for nothing beyond the download.

Ultra Measure Master holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Conversion Calculator Units has 5K ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 88% of Ultra Measure Master's written reviews are positive against 82% of Conversion Calculator Units's.

Ultra Measure Master ships an update every 11 months, Conversion Calculator Units every 2 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Ultra Measure Master | Conversion Calculator Units |
| --- | --- | --- |
| Price | $29.99 | **Free** |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/ultra-measure-master/id376853039/reviews)** | [4.7 (5K ratings)](https://appshunter.io/ios/app/conversion-calculator-units/id727632233/reviews) |
| Number of ratings | 9 | **5K** |
| Positive reviews | **87.5% of reviews** | 82.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Every 2 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 61 MB | 41 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [RV AppStudios LLC](https://appshunter.io/developer/340181308) |

## What reviewers say

### Ultra Measure Master

[App page](https://appshunter.io/ios/app/ultra-measure-master/id376853039)

This professional conversion calculator offers over 400 standard and metric unit conversions for linear, area, and volume measurements. It's ideal for professionals needing quick and accurate calculations in various dimensional formats, including feet-inch-fractions and decimal units.

**Highlights:** Over 400 conversion combinations, 60+ standard and metric units, Converts between feet-inch-fractions, decimal feet/inches, and metric, Calculates linear, area, and volume, Includes weight, velocity, flow rate, pressure, and temperature conversions, Built-in User's Guide with key-specific help

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

**In-app purchases:** none


### 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 Ultra Measure Master free?

Ultra Measure Master costs $29.99, with no in-app purchases.

### Is Conversion Calculator Units free?

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

### Which has better reviews, Ultra Measure Master or Conversion Calculator Units?

Ultra Measure Master is rated higher. Ultra Measure Master averages 5.0 out of 5 from 9 ratings, while Conversion Calculator Units averages 4.7 from 5K ratings.

### Do Ultra Measure Master or Conversion Calculator Units have ads?

Conversion Calculator Units shows ads; Ultra Measure Master does not.

### Which is updated more often, Ultra Measure Master or Conversion Calculator Units?

Ultra Measure Master ships an update every 11 months, and Conversion Calculator Units every 2 months. Most recently, Ultra Measure Master was updated on October 23, 2026 and Conversion Calculator Units on October 24, 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.*