# UNITS MASTER vs VMT Pro

The clearest difference is rating: UNITS MASTER at 4.3 against VMT Pro's 1.7. UNITS MASTER also leads on in-app purchases (none vs 1) and review sentiment (75% vs 47%). VMT Pro's advantage is update cadence (every 11 days vs every 4 months). On ratings volume, ads, device support and iOS requirement there is nothing between them.

UNITS MASTER costs $6.99 and VMT Pro $9.99 up front. VMT Pro sells 1 in-app purchase, starting at $9.99 per year. UNITS MASTER asks for nothing beyond the download.

UNITS MASTER holds the better App Store score, 4.3 against 1.7. Both are backed by a comparable volume of ratings — 6 and 7 respectively. Written reviews point the same way: 75% of UNITS MASTER's written reviews are positive against 47% of VMT Pro's.

UNITS MASTER ships an update every 4 months, VMT Pro every 11 days. The most recent releases landed on September 10, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | UNITS MASTER | VMT Pro |
| --- | --- | --- |
| Price | **$6.99** | $9.99 |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/units-master/id1428926317/reviews)** | [1.7 (7 ratings)](https://appshunter.io/ios/app/vmt-pro/id1549789370/reviews) |
| Number of ratings | 6 | **7** |
| Positive reviews | **75.0% of reviews** | 46.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 11 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 13 MB | 134 MB |
| Requires iOS | **12.0** | 12.2 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Intemodino Group s.r.o.](https://appshunter.io/developer/557849644) | [Hai Nguyen](https://appshunter.io/developer/1315913698) |

## What reviewers say

### UNITS MASTER

[App page](https://appshunter.io/ios/app/units-master/id1428926317)

This app is a comprehensive unit conversion calculator for length, distance, and area. It supports a vast array of US and metric units, offering both fractional and decimal calculations with customizable rounding. Users can also perform complex mathematical operations and access a calculation history.

**Highlights:** Extensive US and metric unit support, Fractional and decimal calculations, Customizable rounding precision, Complex calculation capabilities, Calculation history and sharing, Multiple output formats

**Features:** Vision Pro support

**In-app purchases:** none


### VMT Pro

[App page](https://appshunter.io/ios/app/vmt-pro/id1549789370)

Effortlessly track the maintenance history of your vehicles, equipment, or valuable assets. This intuitive app simplifies logging and monitoring service details, managing schedules, repairs, and expenses to keep your assets in top shape and extend their lifespan.

**Highlights:** Manage vehicle details with photos and VIN, Set and receive service reminders, Track maintenance records with receipt photos, Archive, restore, or delete vehicles, Search and view chronological maintenance records, Export vehicle data in CSV format

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VMT Pro One-Year Subscription | $9.99 | per year |


## Frequently asked questions

### Is UNITS MASTER free?

UNITS MASTER costs $6.99, with no in-app purchases.

### Is VMT Pro free?

VMT Pro costs $9.99, and also offers in-app purchases.

### Which has better reviews, UNITS MASTER or VMT Pro?

UNITS MASTER is rated higher. UNITS MASTER averages 4.3 out of 5 from 6 ratings, while VMT Pro averages 1.7 from 7 ratings.

### Do UNITS MASTER or VMT Pro have ads?

Neither UNITS MASTER nor VMT Pro shows ads.

### Which is updated more often, UNITS MASTER or VMT Pro?

UNITS MASTER ships an update every 4 months, and VMT Pro every 11 days. Most recently, UNITS MASTER was updated on September 10, 2026 and VMT Pro on September 22, 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.*