# Pressure Unit Converter vs Thetis Tools

The clearest difference is price: Thetis Tools at Free against Pressure Unit Converter's $3.99. Pressure Unit Converter's advantage is update cadence (every 2 months vs every 7 months) and iOS requirement (6.0 vs 14.0). On ads, in-app purchases and device support there is nothing between them.

Thetis Tools is free to download; Pressure Unit Converter costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Pressure Unit Converter ships an update every 2 months, Thetis Tools every 7 months. The most recent releases landed on November 2, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Pressure Unit Converter | Thetis Tools |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pressure-unit-converter/id1062000497/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | Paid | — |
| Size | 23 MB | 50 MB |
| Requires iOS | **6.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Intemodino Group s.r.o.](https://appshunter.io/developer/557849644) | [Thetis srl](https://appshunter.io/developer/397584184) |

## What reviewers say

### Pressure Unit Converter

[App page](https://appshunter.io/ios/app/pressure-unit-converter/id1062000497)

Easily convert pressure measurements between various units with customizable rounding options for both decimal and fractional results. Save and email your conversion history for convenient record-keeping.

**Highlights:** Multiple pressure unit support, Decimal and fractional result display, Customizable rounding for decimals, Customizable fraction rounding, Conversion history, Email results and history, Portrait and landscape support

**Features:** Vision Pro support

**In-app purchases:** none


### Thetis Tools

[App page](https://appshunter.io/ios/app/thetis-tools/id1460268980)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pressure Unit Converter free?

Pressure Unit Converter costs $3.99, with no in-app purchases.

### Is Thetis Tools free?

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

### Do Pressure Unit Converter or Thetis Tools have ads?

Neither Pressure Unit Converter nor Thetis Tools shows ads.

### Which is updated more often, Pressure Unit Converter or Thetis Tools?

Pressure Unit Converter ships an update every 2 months, and Thetis Tools every 7 months. Most recently, Pressure Unit Converter was updated on November 2, 2026 and Thetis Tools on October 26, 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.*