# Material Master vs Pressure Units Converter

The clearest difference is price: Material Master at Free against Pressure Units Converter's $1.99. Pressure Units Converter's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On update cadence, ads and in-app purchases there is nothing between them.

Material Master is free to download; Pressure Units Converter costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Material Master ships an update every 14 months, Pressure Units Converter every 16 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | Material Master | Pressure Units Converter |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 14 months** | Every 16 months |
| Size | 44 MB | 8 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [GE MAO RUBBER INDUSTRIAL CO., LTD.](https://appshunter.io/developer/1078558543) | [Kei Suefuji](https://appshunter.io/developer/1388335881) |

## What reviewers say

### Material Master

[App page](https://appshunter.io/ios/app/material-master/id1253339380)

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

**In-app purchases:** none


### Pressure Units Converter

[App page](https://appshunter.io/ios/app/pressure-units-converter/id1452151266)

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

**In-app purchases:** none


## Frequently asked questions

### Is Material Master free?

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

### Is Pressure Units Converter free?

Pressure Units Converter costs $1.99, with no in-app purchases.

### Do Material Master or Pressure Units Converter have ads?

Neither Material Master nor Pressure Units Converter shows ads.

### Which is updated more often, Material Master or Pressure Units Converter?

Material Master ships an update every 14 months, and Pressure Units Converter every 16 months. Most recently, Material Master was updated on November 2, 2026 and Pressure Units Converter on November 2, 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.*