Comparison

Ascent EFB vs E6B Flight Computer Calc

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Ascent EFB

Plan and navigate flights with a high-performance moving map and integrated weather and airspace data. Features include flight planning, real-time weather overlays, global airspace information, and an electronic logbook. Built by pilots for pilots, it offers a clean interface for enhanced situational awareness.

Highlights
  • High-performance moving map
  • Integrated weather overlays
  • Global airspace information
  • Flight planning tools
  • Electronic logbook
  • 3D map view
Features
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Ascent is the electronic flight bag built to keep you ahead of the airplane. Plan the flight, brief the weather, and see the airspace around you, all on one fast, uncluttered map. Whether you're a student pilot flying your first cross-country or a working crew planning a long leg, Ascent gives you a clean, high-performance moving map and the tools to back it up. No clutter, no learning curve, just the picture you need to fly. FLIGHT PLANNING Build your route right on the map. Set your departure and destination, drop waypoints along the way, and watch the whole flight come together from takeoff to touchdown. Ascent runs the numbers for you: distance, ETE, and fuel burn, laid out in a clean nav log so you know exactly what each leg costs before you fly it. Your plan stays live as conditions change, so you always know where you're headed and what's between you and the airport. WEATHER Get the full picture before you go and stay ahead of it en route. Ascent layers a deep set of weather products right over your route, so you can see the sky the way it actually is: Radar and precipitation, thunderstorms, convective clouds, hail severity, and tropical cyclones for the big-picture threats. Winds aloft with wind speed and wind speed contours, plus temperature, dew point, and humidity to understand what the air is doing. Cloud cover and visibility for the go/no-go call, and sea-level pressure to read the systems moving through. PIREPs, AIRMETs and SIGMETs, Center Weather Advisories (CWA), and the Traffic Flow Management Convective Forecast (TCF). Flying overwater or oceanic? Ocean currents and wave height layers have you covered. Turn on only what you want and keep the map clean. GLOBAL AIRSPACE Fly anywhere. Ascent shows airspace worldwide, so the map works the same whether you're shooting the pattern at your home field or crossing into a new country. See Class B, C, D, and E, MOAs, restricted and prohibited areas, and TFRs, so you know what's around you and what's ahead before you get there. 3D It’s time to stop thinking of EFBs in a 2D manner. We’ve decided that rather than the traditional map layout, the modern pilot should be able to interact with their navigational data with new perspective. You can now enhance your situational awareness and ease of use of your EFB by interacting with a 3D map. LOGBOOK Keep your hours where you fly them. Log your flights in the app so your times, currency, and history are always with you, right next to the map you flew them on. CHARTS Geo-referenced FAA charts, tied to your position on the map. VFR Sectionals and Terminal Area Charts, plus IFR Enroute Low, High and Area charts. Download them before you go and they keep working with no signal at all. OFFLINE Charts and the full 3D map work completely offline. Download the regions you need while you have signal, and the whole picture stays with you when the bars do not. COMING SOON We're just getting started. On the way: Mayday Mode. One tap stands up 7700 and guard 121.5, ready for you to confirm. You fly the airplane. Ascent EFB is built by pilots, for pilots. We ship fast and we listen. Tell us what you want to see next. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

E6B Flight Computer Calc

Features
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Every E6B calculation. Free. Offline. This does what the metal wheel in your flight bag does, without the wheel — free and offline. A KEYPAD BUILT FOR A COCKPIT Most aviation calculators hand you the system keyboard: small keys, half the form covered, a minus sign that fights you. This one has its own — big keys you can hit in turbulence, and it never rearranges what you already typed. YOUR UNITS, EVERYWHERE Altimeter setting in hPa or inHg. Speed in kt, km/h or mph. Distance in nm, km or sm. Temperature in °C or °F. Fuel in litres, US or imperial gallons. Set them once: every screen, widget and saved calculation follows, input fields included. Outside the US the app starts in hPa and litres. A converter screen adds fuel volume to weight for avgas, Jet A and mogas. FLIGHT • True airspeed: IAS to CAS to TAS and Mach, using real compressible-flow relations • Pressure altitude, density altitude and temperature-corrected true altitude • Wind triangle: true heading, wind correction angle, ground speed • Crosswind and headwind for a runway, with gusts and your demonstrated limit • Time, speed and distance — fill in any two, get the third • Fuel: burn rate, endurance, required, reserve, point of no return, equal time point • Climb and descent: rate, gradient, angle, top of descent, obstacle clearance • Turn: rate, radius, bank for standard rate, load factor, stall speed in the turn • Cloud base, freezing level and glide range • Great circle distance and initial course, true to magnetic to compass • Holding entry: direct, parallel or teardrop, and the heading to fly WEIGHT AND BALANCE Build a profile from your own aircraft's weighing report — empty weight, arms, station limits, CG envelope. Load it, and see the point plotted inside the envelope, not just a number. Tanks are loaded in gallons or litres and weighed by fuel type. No aircraft library is bundled, because two airframes off the same line do not weigh the same. CLOCKS, TIMERS AND THE SUN Zulu, local and departure-field time side by side. Flight timer that runs on the Lock Screen. Countdown with holding-leg presets. Sunrise, sunset and civil twilight for any coordinate — and the three different moments night, position lights and night currency begin. ON EVERY DEVICE YOU FLY WITH iPhone, iPad, Apple Watch and Mac. The Watch app calculates on its own — crosswind and density altitude on your wrist. Saved calculations sync over iCloud. WIDGETS Crosswind on your home runway, a Zulu clock, and density altitude at your field, on the Home Screen and the Lock Screen. FOR STUDENT PILOTS The calculations the written test expects, with the inputs and the workings on the same screen so you can see where a number came from. Exam mode hides saved history and anything that reaches the network with one switch, and leaves every calculation in place. METAR AND TAF, DECODED Paste a raw observation or forecast and read it in plain language: wind, visibility, ceiling and the flight category. The same report then feeds the calculations — its altimeter and temperature give density altitude at your field, its wind gives the crosswind on your runway. Offline, no account. CHECKED, NOT ASSUMED Every formula is verified against published references — the ICAO standard atmosphere, the FAA density altitude chart, the AIM holding sectors — and re-checked automatically on every change. FREE, AND WHAT ISN'T Every calculation and conversion: free, unlimited, forever. The one-time unlock adds unlimited METAR/TAF decoding, the analog wheel, exam mode, unlimited aircraft, unlimited history and the widgets — each free to try first. One payment, never a subscription. No ads, ever: nobody should watch a rewarded video in a cockpit. Planning aid only. Not for primary navigation. Always cross-check against your POH, your charts and your own arithmetic. Terms of Use: https://ghapps1.wordpress.com/terms-condition/ Privacy Policy: https://ghapps1.wordpress.com/privacy-policy/

Screenshots

Ascent EFB4 screens
E6B Flight Computer Calc4 screens

Verdict

The call

Ascent EFB and E6B Flight Computer Calc are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Ascent EFB sells 1 in-app purchase, starting at $89.99 per year and E6B Flight Computer Calc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Ascent EFB ships an update every 10 days, E6B Flight Computer Calc every 2 weeks. The most recent releases landed on October 4, 2026 and September 30, 2026 respectively.

ScorecardNo meaningful differences
Ascent EFB versus E6B Flight Computer Calc: the parameters behind the verdict, then further details
ParameterAscent EFBE6B Flight Computer Calc
PriceFreeFree
Rating5.0 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 10 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS17.617.0 — better
Further details — not scored
Size113 MB7 MB
Age rating12+4+
DeveloperGeoSpatiosGrima Hdez

In-app purchases

1 purchases

Ascent EFB

Subscriptions1
  • Yearly1 Year trial$89.991 Year
1 purchases

E6B Flight Computer Calc

One-time1
  • E6B Pro$5.99

Questions

Is Ascent EFB free?
Ascent EFB is free to download, with in-app purchases available.
Is E6B Flight Computer Calc free?
E6B Flight Computer Calc is free to download, with in-app purchases available.
Do Ascent EFB or E6B Flight Computer Calc have ads?
Neither Ascent EFB nor E6B Flight Computer Calc shows ads.
Which is updated more often, Ascent EFB or E6B Flight Computer Calc?
Ascent EFB ships an update every 10 days, and E6B Flight Computer Calc every 2 weeks. Most recently, Ascent EFB was updated on October 4, 2026 and E6B Flight Computer Calc on September 30, 2026.

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