# Aviation Checklist vs PhosphorHertz

The clearest difference is price: Aviation Checklist at Free against PhosphorHertz's $0.99. Aviation Checklist also leads on update cadence (every 2 weeks vs every 4 months) and iOS requirement (12.1 vs 26.2). On ads, in-app purchases and device support there is nothing between them.

Aviation Checklist is free to download; PhosphorHertz costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Aviation Checklist ships an update every 2 weeks, PhosphorHertz every 4 months. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Aviation Checklist | PhosphorHertz |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/aviation-checklist/id1592929771/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 48 MB | 5 MB |
| Requires iOS | **12.1** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aviation Checklist Ltd](https://appshunter.io/developer/1592929773) | [Stuart Woolley](https://appshunter.io/developer/315697638) |

## What reviewers say

### Aviation Checklist

[App page](https://appshunter.io/ios/app/aviation-checklist/id1592929771)

This app provides pilots with quick access to essential checklists and emergency procedures. Designed by pilots, it streamlines information retrieval, saving valuable time compared to traditional manuals. It's useful both in-flight for immediate needs and on the ground for knowledge review.

**Highlights:** Quick access checklists, Emergency procedures, Aircraft systems knowledge, In-flight and ground use, Automatic updates with subscription

**Features:** macOS Compatibility

**In-app purchases:** none


### PhosphorHertz

[App page](https://appshunter.io/ios/app/phosphorhertz/id6759729656)

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

**In-app purchases:** none


## Frequently asked questions

### Is Aviation Checklist free?

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

### Is PhosphorHertz free?

PhosphorHertz costs $0.99, with no in-app purchases.

### Do Aviation Checklist or PhosphorHertz have ads?

Neither Aviation Checklist nor PhosphorHertz shows ads.

### Which is updated more often, Aviation Checklist or PhosphorHertz?

Aviation Checklist ships an update every 2 weeks, and PhosphorHertz every 4 months. Most recently, Aviation Checklist was updated on October 16, 2026 and PhosphorHertz on October 14, 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.*