# Plen vs QuickColdAlt

Plen and QuickColdAlt are too close to call on the numbers: across 8 compared parameters — price, review sentiment, update cadence and ads among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Plen ships an update every 6 days, QuickColdAlt every 11 days. Both last shipped on November 4, 2026.

## The numbers

| Metric | Plen | QuickColdAlt |
| --- | --- | --- |
| 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 | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 11 days |
| Monetization | Free | Free |
| Size | 203 MB | 40 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Automata Solutions Ltd.](https://appshunter.io/developer/1520244123) | [SEUNGSOO YOU](https://appshunter.io/developer/1785034668) |

## What reviewers say

### Plen

[App page](https://appshunter.io/ios/app/plen/id6504163423)

Track aircraft in real-time with live location updates. See planes as they fly and monitor weather conditions along their routes. Discover various types of aircraft with this intuitive radar tool.

**Highlights:** Real-time ADS-B tracking, Live aircraft location updates, Weather updates for flight paths, Discover different types of aircraft, Intuitive radar interface

**Features:** macOS Compatibility, 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 Plen free?

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

### Is QuickColdAlt free?

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

### Do Plen or QuickColdAlt have ads?

Neither Plen nor QuickColdAlt shows ads.

### Which is updated more often, Plen or QuickColdAlt?

Plen ships an update every 6 days, and QuickColdAlt every 11 days. Most recently, Plen was updated on November 4, 2026 and QuickColdAlt on November 4, 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.*