# Ultra Measure Master vs Unit Eater

The clearest difference is price: Unit Eater at Free against Ultra Measure Master's $29.99. Unit Eater also leads on update cadence (every 2 weeks vs every 11 months) and review sentiment (100% vs 88%). Ultra Measure Master's advantage is in-app purchases (none vs 2). On ads and device support there is nothing between them.

Unit Eater is free to download; Ultra Measure Master costs $29.99 up front. Unit Eater sells 2 in-app purchases, starting at $0.99 per month. Ultra Measure Master asks for nothing beyond the download.

Ultra Measure Master ships an update every 11 months, Unit Eater every 2 weeks. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Ultra Measure Master | Unit Eater |
| --- | --- | --- |
| Price | $29.99 | **Free** |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/ultra-measure-master/id376853039/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 87.5% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 61 MB | 65 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 12+ | 4+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [Tom Leon Schmidt](https://appshunter.io/developer/1634212175) |

## 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


### Unit Eater

[App page](https://appshunter.io/ios/app/unit-eater/id6742549723)

This utility app functions as a powerful calculator that handles unit conversions and calculations. It supports a vast array of predefined units and allows users to define their own, making it ideal for scientific and academic tasks. Features include a calculation history, customizable results, and dark mode.

**Highlights:** Unit conversion and calculation, Custom unit definition, Extensive unit library, Calculation history, Customizable result format, Dark mode

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Monthly | $0.99 | per month |
| Premium - Pay once | $3.99 | one-time |


## Frequently asked questions

### Is Ultra Measure Master free?

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

### Is Unit Eater free?

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

### Do Ultra Measure Master or Unit Eater have ads?

Neither Ultra Measure Master nor Unit Eater shows ads.

### Which is updated more often, Ultra Measure Master or Unit Eater?

Ultra Measure Master ships an update every 11 months, and Unit Eater every 2 weeks. Most recently, Ultra Measure Master was updated on October 8, 2026 and Unit Eater on October 16, 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.*