# Air Density Calculator vs EngiCalc Toolkit

The clearest difference is price: EngiCalc Toolkit at Free against Air Density Calculator's $2.99. Air Density Calculator's advantage is iOS requirement (17.6 vs 26.2). On ads, in-app purchases and device support there is nothing between them.

EngiCalc Toolkit is free to download; Air Density Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Air Density Calculator | EngiCalc Toolkit |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/air-density-calculator/id1421668162/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | — |
| Monetization | Paid | — |
| Size | 1 MB | 7 MB |
| Requires iOS | **17.6** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Роман Burmistrov](https://appshunter.io/developer/1896636654) |

## What reviewers say

### Air Density Calculator

[App page](https://appshunter.io/ios/app/air-density-calculator/id1421668162)

Instantly calculate air density and atmospheric properties with this offline engineering tool. Features three modes for density, reverse solving, and altitude estimation, with flexible unit support and calculation breakdown.

**Highlights:** Accurate air density calculation, Density, Reverse Solve, and Altitude modes, Flexible unit support, Show calculation steps, Tap to copy results, Calculation history, Offline functionality

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

**In-app purchases:** none


### EngiCalc Toolkit

[App page](https://appshunter.io/ios/app/engicalc-toolkit/id6776429595)

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

**In-app purchases:** none


## Frequently asked questions

### Is Air Density Calculator free?

Air Density Calculator costs $2.99, with no in-app purchases.

### Is EngiCalc Toolkit free?

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

### Do Air Density Calculator or EngiCalc Toolkit have ads?

Neither Air Density Calculator nor EngiCalc Toolkit shows ads.

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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.*