# Lightspeed App vs QuickColdAlt

The clearest difference is review sentiment: QuickColdAlt at 100% against Lightspeed App's 12%. QuickColdAlt also leads on rating (5.0 vs 3.3) and update cadence (every 11 days vs every 6 months). Lightspeed App's advantage is ratings volume (49 vs 1) and iOS requirement (13.0 vs 16.4). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

QuickColdAlt holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: Lightspeed App has 49 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 12% of Lightspeed App's written reviews are positive against 100% of QuickColdAlt's.

Lightspeed App ships an update every 6 months, QuickColdAlt every 11 days. The most recent releases landed on September 7, 2026 and August 1, 2026 respectively.

## The numbers

| Metric | Lightspeed App | QuickColdAlt |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (49 ratings)](https://appshunter.io/ios/app/lightspeed-app/id1469234593/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/quickcoldalt/id6739363484/reviews)** |
| Number of ratings | **49** | 1 |
| Positive reviews | 11.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 11 days** |
| Monetization | Free | Free |
| Size | 71 MB | 40 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lightspeed Aviation](https://appshunter.io/developer/541925734) | [SEUNGSOO YOU](https://appshunter.io/developer/1785034668) |

## What reviewers say

### Lightspeed App

[App page](https://appshunter.io/ios/app/lightspeed-app/id1469234593)

Enhance your flight experience with real-time CO sensor monitoring and personalized audio. Record and archive radio conversations for review and training.

**Highlights:** Real-time CO sensor tracking, Smart CO alerts, Personalized audio equalization (HearingEQity™), Record radio conversations, Archive flight recordings, Draw flight diagrams

**Features:** Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Lightspeed App free?

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

### Is QuickColdAlt free?

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

### Which has better reviews, Lightspeed App or QuickColdAlt?

QuickColdAlt is rated higher. Lightspeed App averages 3.3 out of 5 from 49 ratings, while QuickColdAlt averages 5.0 from 1 ratings.

### Do Lightspeed App or QuickColdAlt have ads?

Neither Lightspeed App nor QuickColdAlt shows ads.

### Which is updated more often, Lightspeed App or QuickColdAlt?

Lightspeed App ships an update every 6 months, and QuickColdAlt every 11 days. Most recently, Lightspeed App was updated on September 7, 2026 and QuickColdAlt on August 1, 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.*