# Ultra Measure Master vs Thor Lithium

The clearest difference is price: Thor Lithium at Free against Ultra Measure Master's $29.99. Thor Lithium also leads on update cadence (monthly vs every 11 months) and iOS requirement (13.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Thor Lithium is free to download; Ultra Measure Master costs $29.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Ultra Measure Master ships an update every 11 months, Thor Lithium monthly. The most recent releases landed on October 23, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Ultra Measure Master | Thor Lithium |
| --- | --- | --- |
| Price | $29.99 | **Free** |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/ultra-measure-master/id376853039/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Monthly** |
| Monetization | Paid | — |
| Size | 61 MB | 52 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [江西达伙网络科技有限公司](https://appshunter.io/developer/1234844673) |

## 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


### Thor Lithium

[App page](https://appshunter.io/ios/app/thor-lithium/id6746757540)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ultra Measure Master free?

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

### Is Thor Lithium free?

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

### Do Ultra Measure Master or Thor Lithium have ads?

Neither Ultra Measure Master nor Thor Lithium shows ads.

### Which is updated more often, Ultra Measure Master or Thor Lithium?

Ultra Measure Master ships an update every 11 months, and Thor Lithium monthly. Most recently, Ultra Measure Master was updated on October 23, 2026 and Thor Lithium 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.*