Electronic flight computer
Real keys, a backlit LCD, and more than 40 functions for wind, altitude, fuel, trip planning and weight & balance. Pick a function, type the numbers, press ENTER.
Backlight
Re-lights this page
Keys › Feel
No forms and no sliders: a keypad and a display, with a key for every job. Every kind of key has its own haptic click, and a key that doesn't apply answers with a hard double buzz, so a mistake is felt, not just seen.
FLT, PLAN, W/B, CALC, TIMER, FAV and SET run along the top. Menu rows are numbered, so a digit jumps straight to one.
Every entry is checked. An out-of-range value is refused with a plain message on the LCD, such as RUNWAY IS 1–36.
CONV converts a value to the next unit, and UNIT relabels it. One setting switches the whole app to metric.
1:45 for a time, D:MM for latitude and longitude, and math right in the field: 340+170 for two front seats.
LCD › Pictures
Where a picture helps, the LCD draws one, so you can check an answer at a glance before you trust it.
Wind › Hdg & GS
TAS 120 kt, course 090°, wind 040° at 20 kt. Fly 083° at 106 kt, with the triangle drawn on a compass.
Wind › Crosswind
Runway 27, wind 310° at 18 kt. 12 kt from the right and 14 kt of headwind, with the runway drawn.
Nav › Hold entry
Inbound 270°, heading 120°, right turns. A teardrop entry: outbound 090°, fly 060°.
And with E6B Pro, your loaded CG drawn inside your aircraft's envelope. See E6B Pro
FLT › Functions
27 flight functions in 9 groups, plus 12 unit converters, and every one of them is free. Pick a group, or press a digit to jump, just like in the app.
3 functions · Free
The wind triangle, from any side.
Heading & GS
Crosswind
Find Wind
Calc
Type times with the : key. 1:45 + 0:55 = 2:40, and a tape keeps your last three calculations.
Timer
A stopwatch with tenths, and a countdown that flashes the LCD at zero. UTC and local time on both.
Fav
Press FAV on any flight or W/B page to star it. Press FAV again to open the list.
E6B Pro
E6B Pro adds PLAN for trips and W/B for weight & balance. Everything else is free, and stays free.
Plan
Set TAS, wind, variation, fuel flow, departure time and reserve once for the trip. Add legs with distance and course; a leg uses the trip's wind unless you give it its own.
W/B
Enter your aircraft's empty weight and arm, station arms, maximum gross weight and CG envelope once. Then load the seats, bags and fuel.
Or start a subscription with 7 days free.
Lifetime
Best value$9.99once
E6B Pro, for good
A single purchase. No subscription.
Yearly
$6.99a year
7 days free
Then $6.99 a year. Cancel anytime.
Monthly
$2.99a month
7 days free
Then $2.99 a month. Cancel anytime.
Prices in US dollars; the App Store shows the price in your currency. Subscriptions renew automatically unless cancelled at least 24 hours before the trial or current period ends, in your Apple Account settings. If Pro ends, PLAN and W/B lock again, and your trip and aircraft stay saved.
| Included | Free | Pro |
|---|---|---|
| FLT: 27 flight functions and 12 unit converters | Included | Included |
| CALC, TIMER, FAV and SET | Included | Included |
| PLAN: trip planning with legs and totals | Not included | Included |
| W/B: aircraft profile, load & CG, weight shift, % MAC | Not included | Included |
Set › Backlight
DAY, BACKLIT, and a dark amber NIGHT for flying after dark. The app remembers your choice, along with every value, leg, favorite and setting.
Backlight
Try them here
A flight computer shouldn't need to know who you are. This one doesn't ask.
Nothing to sign up for and nothing to log in to. Open it and start working problems.
Every calculation runs on the phone, and your values, trips and aircraft profile are saved on it. There's no server to send them to.
No connection needed to calculate. Buying or restoring E6B Pro needs one.
No analytics or advertising SDKs. Apple handles payment, and RevenueCat checks your E6B Pro purchase.
The details are in our privacy policy.
Yes. Every calculation runs on your iPhone. You only need a connection to buy or restore E6B Pro.
No. There's no sign-up and no login. Open the app and start calculating.
PLAN, for trips with legs and totals, and W/B, for weight & balance with your aircraft's CG envelope. The 27 flight functions, 12 converters, CALC, TIMER, FAV and SET are free.
Lifetime is a one-time $9.99. The Yearly ($6.99) and Monthly ($2.99) plans start with 7 days free. Prices are in US dollars; the App Store shows the price in your currency.
PLAN and W/B lock again, but your trip and aircraft profile stay saved on your iPhone for when Pro is back.
There's no account, and there are no analytics or advertising SDKs. The app doesn't ask for your name, email or location, and your values, trips and aircraft profile stay on your iPhone. To unlock E6B Pro, it uses RevenueCat, which receives an anonymous ID, your App Store purchase details and basic device information. The privacy policy has the details.
Yes. One setting switches everything to metric, and any field can be converted on its own with CONV.
Yes. W/B › AIRCRAFT PROFILE takes your empty weight and arm, maximum gross weight, station arms and CG envelope. One aircraft profile is stored.
No. It's a planning and training aid. It doesn't replace your POH/AFM, official performance data or a weather briefing, and weight & balance is only as good as the numbers you enter.
Not at the moment. It's made for iPhone, on iOS 15.1 or later.
Free on the App Store, for iPhone. E6B Pro from $2.99 a month, or $9.99 once.