Dead Reckoner: E6B Tutor

Dead Reckoner is an electronic E6B flight computer that also teaches you the method behind every answer.

FLIGHT COMPUTER, FREE AND COMPLETE
Pressure and density altitude, true airspeed, Mach, crosswind, wind triangle, find-the-wind, compass heading, holding entries, fuel burn and endurance, climb and descent, glide, weight and balance, a multi-leg trip planner, a unit converter, a timer for tank switches and a calculator that adds hours and minutes. No ads, no account, no internet needed.

WHY? ON EVERY RESULT
Tap Why? and see what the result means and the formula behind it. With Pro, every step is worked out with your own numbers, plus a rule of thumb. Learn the method, not just the buttons.

PRACTICE LIKE THE KNOWLEDGE TEST
Knowledge-test style problems with fresh numbers every time: crosswind, density altitude, true airspeed, nav log, compass heading, fuel, descent planning, weight and balance, glide. Check your answer, see the solution, open the tool already set up. Three problems a day are free; Pro adds unlimited practice, progress by topic and a timed 10-question exam.

IN YOUR LANGUAGE
The whole app speaks English, Italian, Spanish, Portuguese, French and German. Aviation terms stay in English, the way the FAA test uses them, with a bilingual glossary of 45 key terms. Switch the questions to English when you want exam practice.

BUILT FOR THE COCKPIT
Big keys, a high-contrast display, dark mode for night flights, haptic feedback, U.S. or European units (hPa, liters, kilograms).

DEAD RECKONER PRO, ONE PURCHASE
The flight computer is free forever. Pro is a single purchase, no subscription: unlimited practice, the timed exam, step-by-step explanations and progress by topic.

Dead Reckoner is a study and planning aid. Always check your results and your airplane's POH: you are the pilot in command.