Rotax Global vs Fox + Son Jetmax
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rotax Global
This app offers comprehensive information for the Rotax Max Challenge Grand Finals. Users can access live timing, race updates, driver notifications, and track details. It also provides essential event information like schedules, regulations, and local amenities.
- Live Timing and Results
- Live Streaming
- Race Updates
- Driver Notifications
- Track Information
- Event Schedule
- Regulations and Info
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Welcome to Rotax App. This application provides information about Rotax Max Challenge Grand Finals. The user will be able to access several features like: - Live Timing and results - Live streaming - Time schedule - Race updates - Driver notifications - Weather forecast - Track info - Entrylist - Regulations - General info - Paddock plan - Drivers info - Hotel, restaurants, emergency info - Rent-a-car link - NOTICE BOARD, virtual notices and public announcements - BRIEFING, virtual drivers meeting and behaviour instructions
Fox + Son Jetmax
This application simplifies jetting calculations for Rotax engines, factoring in weather and altitude. It provides racers with precise tuning recommendations, including relative horsepower and an interactive gear chart, to optimize performance on race day.
- Rotax engine jetting calculator
- Weather and altitude adjustments
- Relative horsepower calculation
- Interactive gear chart
- Rotax tuning tips
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Precision jetting made easy — This app helps you calculate jetting for Rotax engines based on weather and altitude. Now every Rotax racer has access to the same jetting Fox + Son has used to power our engines to countless Rotax National wins and Grand Finals tickets. After many months of development and testing, we have successfully brought the same jetting algorithms we use on our dyno to a quick, easy-to-use app. We have also included all of our popular Rotax tuning tips that are found on our website, along with a handy interactive gear chart for your convenience. As we do with our website, we will continually update the app as we discover new tuning information. Anytime a new cylinder or part is introduced, all of the testing we do at the shop will flow directly to Jetmax. Jetmax will also calculate the relative horsepower for that atmospheric condition. The relative horsepower percentage is helpful information to have when selecting your gear ratio. In certain situations you can benefit from increasing your gear ratio when HP is low & decreasing your gear ratio when HP is high. Whether you're competing at the track or fine-tuning your kart for practice, Jetmax gives you accurate, reliable recommendations so you can focus on performance. Features: - Jetting calculator for Rotax engines - Calculates relative horsepower - Includes an interactive gearing chart Engineered by racers, for racers — Fox + Son Jetmax App delivers the tools you need to stay competitive on race day. *You must have a valid subscription in order to use this app.
Screenshots
Verdict
The clearest difference is review sentiment: Fox + Son Jetmax at 100% against Rotax Global's 0%. Fox + Son Jetmax also leads on rating (5.0 vs 2.0). Rotax Global's advantage is in-app purchases (none vs 1) and update cadence (every 5 weeks vs every 3 months). On price, ratings volume, ads and device support 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. Fox + Son Jetmax sells 1 in-app purchase, starting at $7.99 per year. Rotax Global asks for nothing beyond the download.
Fox + Son Jetmax holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 0% of Rotax Global's written reviews are positive against 100% of Fox + Son Jetmax's.
Rotax Global ships an update every 5 weeks, Fox + Son Jetmax every 3 months. The most recent releases landed on October 24, 2026 and September 23, 2026 respectively.
| Parameter | Rotax Global | Fox + Son Jetmax |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (4 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 5 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 16 MB | 16 MB |
| Age rating | 17+ | 4+ |
| Developer | BRP-Rotax GmbH & Co KG | Trophy Inc. |
Customer experience
Rotax Global
Fox + Son Jetmax
In-app purchases
Rotax Global
No in-app purchases
Fox + Son Jetmax
- Premium Yearly7 Days trial$7.991 Year
Questions
Is Rotax Global free?
Is Fox + Son Jetmax free?
Which has better reviews, Rotax Global or Fox + Son Jetmax?
Do Rotax Global or Fox + Son Jetmax have ads?
Which is updated more often, Rotax Global or Fox + Son Jetmax?
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