# UNITS MASTER vs SITECH

The clearest difference is price: SITECH at Free against UNITS MASTER's $6.99. SITECH also leads on update cadence (every 5 weeks vs every 4 months). UNITS MASTER's advantage is review sentiment (75% vs 67%) and iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

SITECH is free to download; UNITS MASTER costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UNITS MASTER ships an update every 4 months, SITECH every 5 weeks. The most recent releases landed on October 14, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | UNITS MASTER | SITECH |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/units-master/id1428926317/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | **75.0% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | Paid | **Free** |
| Size | 13 MB | 48 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Intemodino Group s.r.o.](https://appshunter.io/developer/557849644) | [SITECH Nederland B.V.](https://appshunter.io/developer/1294706075) |

## 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


### SITECH

[App page](https://appshunter.io/ios/app/sitech/id1452386841)

Access comprehensive support for your needs. Find answers through FAQs, chat with experts, or request a callback. Stay updated with the latest news and announcements.

**Highlights:** FAQ knowledge base, Live chat support, Callback requests, Latest news updates, Personalized guidance

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is UNITS MASTER free?

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

### Is SITECH free?

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

### Do UNITS MASTER or SITECH have ads?

Neither UNITS MASTER nor SITECH shows ads.

### Which is updated more often, UNITS MASTER or SITECH?

UNITS MASTER ships an update every 4 months, and SITECH every 5 weeks. Most recently, UNITS MASTER was updated on October 14, 2026 and SITECH on October 13, 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.*