# Neas vs Vapour Pressures

The clearest difference is price: Neas at Free against Vapour Pressures's $3.99. Neas also leads on update cadence (every 3 months vs every 6 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Neas is free to download; Vapour Pressures costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Neas ships an update every 3 months, Vapour Pressures every 6 months. The most recent releases landed on November 3, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Neas | Vapour Pressures |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/vapour-pressures/id6738324417/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | — | Paid |
| Size | 82 MB | 14 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Neas AS](https://appshunter.io/developer/1500639503) | [Irving Josue Cortes Iturriaga](https://appshunter.io/developer/1750836580) |

## What reviewers say

### Neas

[App page](https://appshunter.io/ios/app/neas/id6450002138)

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

**In-app purchases:** none


### Vapour Pressures

[App page](https://appshunter.io/ios/app/vapour-pressures/id6738324417)

Calculate vapor pressures and boiling points quickly and accurately with this tool. It features two extensive databases and supports various units, making it ideal for engineers, scientists, and students working with phase-change phenomena.

**Highlights:** Vapor pressure calculation, Boiling point calculation, Extensive substance databases, Support for multiple units, Multi-language support, No data collection

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

**In-app purchases:** none


## Frequently asked questions

### Is Neas free?

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

### Is Vapour Pressures free?

Vapour Pressures costs $3.99, with no in-app purchases.

### Do Neas or Vapour Pressures have ads?

Neither Neas nor Vapour Pressures shows ads.

### Which is updated more often, Neas or Vapour Pressures?

Neas ships an update every 3 months, and Vapour Pressures every 6 months. Most recently, Neas was updated on November 3, 2026 and Vapour Pressures on November 11, 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.*