iPreFlight Genesis vs Leon
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iPreFlight Genesis
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.
- Integrated flight planning
- Takeoff/landing performance analysis
- Weight and balance calculations
- Fuel burn optimization
- Trip book creation
- Offline flight plan capability
- Flight release preparation
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iPreFlight Genesis™, the next generation of iPreFlight, integrates flight planning, takeoff/landing performance limitations, and manufacturers’ weight and balance requirements with only minimal user input required. The flight planning element uses manufacturers’ operational data, in conjunction with current forecast weather conditions, to calculate the fuel required for the flight. The fuel calculation includes fuel burn (optimized for minimum fuel or time), and fuel for reserves, alternates, and holding. Along with runway analysis (RWA), weight and balance (WB), and flight planning, Genesis allows the user to prepare a trip book containing all textual and graphic weather products for the planned flight. The trip may be created days in advance of the flight, stored on the iPad, and can be automatically updated as products are revised. Or if needed, Genesis can create flight plans without an internet connection by using historical weather information, and then can be updated when internet is available. Approaching departure time, the user can easily prepare a flight release, consolidating RWA, WB, flight planning, and weather products. The flight release can be emailed, stored on an iPad, and/or shared with other flight deck crew members.
Leon
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.
- Mobile crew information access
- Aircraft operations support
- Scheduling and rostering
- Airplane dispatch
- Online flight watch
- Centralized database access
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LEON is an application designed for crew members. It offers a mobile access to crew information entered by air operators into Leon system. Leon is a software for aviation supporting aircraft operations fearuring many various functions that allow to run different procedures smoothly. It includes aiding in scheduling, aircraft and crew rostering, airplane dispatch, on-line flight watch, aircraft charter sales and many more. it consists of central database accessible through Internet in relation to users' privileges. The new version of the LEON app has a new design and displays office duties that were missing in the previous version.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | iPreFlight Genesis | Leon |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (7 ratings) | 4.3 (8 ratings) — better |
| Positive reviews | 28.6% of reviews — better | 9.1% of reviews |
| Number of ratings | 7 | 8 — better |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 202 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Aircraft Performance Group, LLC | Leon Software |
Customer experience
iPreFlight Genesis
Leon
In-app purchases
iPreFlight Genesis
- APG Subscription (1 year)$4.991 Year
Leon
No in-app purchases
Questions
Is iPreFlight Genesis free?
Is Leon free?
Which has better reviews, iPreFlight Genesis or Leon?
Do iPreFlight Genesis or Leon have ads?
Which is updated more often, iPreFlight Genesis or Leon?
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