Rotax MAX Jetting vs Kartnote

The Rotax MAX Jetting App enables the user to calculate the optimal carburetor main jet size for Rotax kart engines of the MAX series: - 125 Micro MAX evo - 125 Mini MAX evo - 125 Junior MAX evo - 125 Senior MAX evo - 125 MAX DD2 based on the current ambient conditions - Temperature - Altitude - Air pressure  - Humidity This can be done either automatically using GPS and a functioning internet connection or manually by entering the ambient parameters. *Automatically* Click on Use GPS position for weather data, select the desired engine type from the scroll menu and start the calculation tabbing the Calculate button. *Manually* Enter all ambient parameters, select the desired engine type from the scroll menu and start the calculation tabbing the Calculate button. Important: Since the calculation is based on the "relative air pressure" (air pressure at 0m above sea level), your own barometer must be calibrated to the current altitude before you can actually use the value. Online weather services provide this value by default. To toggle between Celsius and Fahrenheit, press °C/°F and to choose between meters and feet press m/ft next to the entry of the value. To start a new calculation, click Reset.

Kartnote is a focused karting logbook for drivers, mechanics, racing families, and small teams. Track race sessions, lap and sector times, kart setups, weather conditions, and driver progress—all organized in one dependable place. Stop relying on messy notebooks or scattered spreadsheets. Kartnote makes it simple to preserve what happened on track so you can focus on getting faster. RECORD THE DETAILS THAT MATTER: • Lap and Sector Times: Enter lap and sector times while Kartnote automatically calculates your personal bests. • Detailed Setup Tracking: Log chassis, engine, and tire setups alongside weather and track temperatures. • Session Context: Record the date, track, kart, class, and session type—from Practice and Qualifying to Heats, Pre-Finals, Finals, and Races. • Driver Feedback: Save session notes and driver comments while they are still fresh. ANALYZE YOUR PROGRESS: Build a reliable history of every race weekend and test day. Review sessions by track, driver, kart, or class to understand what changed and how performance developed over time. Kartnote automatically calculates useful statistics including best lap, average lap, consistency, total lap count, and distance. BUILT FOR DRIVERS, FAMILIES, AND SMALL TEAMS: Manage multiple drivers as well as shared karts, engines, and classes using one logbook. Every session connects the driver, equipment, setup, conditions, and lap times—making Kartnote useful for solo racers, parents managing their children’s karts, instructors, mechanics, and small teams. A FREE CORE YOU CAN RELY ON: No subscription is required to: • Log, edit, and review unlimited sessions • Manage drivers, karts, engines, classes, and tracks • Sync your data across devices with iCloud • Export your data as CSV files for analysis or archival UNLOCK KARTNOTE PRO: Kartnote Pro adds deeper analysis and time-saving workflows: • Session Comparison: Compare your performance with the previous relevant session at the same track. • Setup and Weather Differences: Review chassis, tire, engine, and weather changes side by side. • Smart Autofill: Save time at the track by filling setup values from relevant previous sessions. • Advanced Insights: See track-specific progress and richer dashboard analytics. • Bulk Management: Assign equipment and classes to multiple past sessions and merge duplicate classes. Whether you are testing subtle setup changes, chasing personal bests, or building a long-term kart racing history, Kartnote gives you a dependable performance record for every day on track. Kartnote Pro is available as an optional annual auto-renewing subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/