# QuickColdAlt vs Q400

The clearest difference is in-app purchases: QuickColdAlt at none against Q400's 2. QuickColdAlt also leads on iOS requirement (16.4 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. Q400 sells 2 in-app purchases, starting at $4.99 per month. QuickColdAlt asks for nothing beyond the download.

## The numbers

| Metric | QuickColdAlt | Q400 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/quickcoldalt/id6739363484/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | — |
| Monetization | Free | — |
| Size | 40 MB | 10 MB |
| Requires iOS | **16.4** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SEUNGSOO YOU](https://appshunter.io/developer/1785034668) | [MacLaren's Studio](https://appshunter.io/developer/549588446) |

## What reviewers say

### QuickColdAlt

[App page](https://appshunter.io/ios/app/quickcoldalt/id6739363484)

This utility calculates temperature and altitude corrections for flight operations. It offers a user-friendly interface for quick and reliable results, with a dark mode ideal for night flying. The app is completely free and ad-free.

**Highlights:** Temperature and altitude correction calculation, User-friendly interface, Fast results (under 10 seconds), Clear and reliable display, Dark mode for night flights, Completely free and ad-free

**Features:** macOS Compatibility

**In-app purchases:** none


### Q400

[App page](https://appshunter.io/ios/app/q400-performance/id6758963990)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Annual | $29.99 | per year |


## Frequently asked questions

### Is QuickColdAlt free?

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

### Is Q400 free?

Q400 is free to download, with in-app purchases available.

### Do QuickColdAlt or Q400 have ads?

Neither QuickColdAlt nor Q400 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.*