# iPreFlight Genesis vs Leon

The clearest difference is rating: Leon at 4.3 against iPreFlight Genesis's 2.6. Leon also leads on in-app purchases (none vs 1). iPreFlight Genesis's advantage is review sentiment (29% vs 9%). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. iPreFlight Genesis sells 1 in-app purchase, starting at $4.99 per year. Leon asks for nothing beyond the download.

Leon holds the better App Store score, 4.3 against 2.6. Both are backed by a comparable volume of ratings — 7 and 8 respectively. Written reviews complicate that: 29% of iPreFlight Genesis's written reviews are positive against 9% of Leon's, so the app with the better star average is not the one people write more warmly about.

iPreFlight Genesis ships an update every 3 weeks, Leon fortnightly. Both last shipped on November 1, 2026.

## The numbers

| Metric | iPreFlight Genesis | Leon |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (7 ratings)](https://appshunter.io/ios/app/ipreflight-genesis/id370256838/reviews) | **[4.3 (8 ratings)](https://appshunter.io/ios/app/leon/id443136426/reviews)** |
| Number of ratings | 7 | **8** |
| Positive reviews | **28.6% of reviews** | 9.1% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 202 MB | 36 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Aircraft Performance Group, LLC](https://appshunter.io/developer/370256841) | [Leon Software](https://appshunter.io/developer/443136429) |

## What reviewers say

### iPreFlight Genesis

[App page](https://appshunter.io/ios/app/ipreflight-genesis/id370256838)

This app streamlines flight planning by integrating takeoff/landing performance, weight and balance, and manufacturer requirements. It calculates required fuel based on operational data and weather forecasts, and can prepare a comprehensive trip book and flight release. It offers offline flight plan creation with later updates.

**Highlights:** Integrated flight planning, Takeoff/landing performance analysis, Weight and balance calculations, Fuel burn optimization, Trip book creation, Offline flight plan capability, Flight release preparation

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| APG Subscription (1 year) | $4.99 | per year |


### Leon

[App page](https://appshunter.io/ios/app/leon/id443136426)

This application provides aviation crew members with mobile access to crew information managed by air operators. It supports aircraft operations with features for scheduling, rostering, dispatch, and flight watch, all accessible through a central online database.

**Highlights:** Mobile crew information access, Aircraft operations support, Scheduling and rostering, Airplane dispatch, Online flight watch, Centralized database access

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

**In-app purchases:** none


## Frequently asked questions

### Is iPreFlight Genesis free?

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

### Is Leon free?

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

### Which has better reviews, iPreFlight Genesis or Leon?

Leon is rated higher. iPreFlight Genesis averages 2.6 out of 5 from 7 ratings, while Leon averages 4.3 from 8 ratings.

### Do iPreFlight Genesis or Leon have ads?

Neither iPreFlight Genesis nor Leon shows ads.

### Which is updated more often, iPreFlight Genesis or Leon?

iPreFlight Genesis ships an update every 3 weeks, and Leon fortnightly. Most recently, iPreFlight Genesis was updated on November 1, 2026 and Leon on November 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.*