# E6BJet — E6B Flight Computer

> Advanced aviation flight computer for professional pilots with comprehensive calculation features. (iPhone/iPad app by Wolf Seldner.)

- Source: https://appshunter.io/ios/app/e6bjet/id1501315525 (this page in markdown: same URL + `.md`)
- Developer: [Wolf Seldner](https://appshunter.io/developer/1501225349)
- Category: Navigation, Productivity
- Price: $5.99 (on sale, was $14.99)
- Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 13 MB
- Languages: English
- Released: 2020-04-11
- Data updated: 2026-06-04
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/e6bjet/id1501315525/reviews.md

## What is E6BJet?

E6BJet does what most professional aviation slide-rules do, and adds advanced features for professional pilots flying modern jet aircraft: QNH-QFE conversion, precision temperature corrections to altitudes/heights, crossover altitude determination, and accurate weight/volume conversion for kerosene, wide-cut, and avgas fuels using actual density. 

E6BJet also computes turn radius, diameter and circumference, along with turn rate.

Thumbwheels/sliders are used to enter values, which is much faster than aligning discs, or typing in numbers.

E6BJet can determine past, present and future sunrise/sunset and civil twilight times, for any location on Earth, between years 1900 and 2999. A user-expandable database of aerodrome locations is provided.

An appearance similar to modern aircraft flight guidance panels allows instant “what-if” calculations, and keeps all calculation parameters in view simultaneously.

Results are shown in most commonly-used aviation units at the same time, eliminating time spent on conversions.

E6BJet can make full use of the altimeter function most iPhones provide, and act as a baro-recorder. 

E6BJet allows quick flight planning calculations for any aircraft, from sport aeroplanes to airliners, and handles calculations well into the supersonic jet range. It is ready for the next-generation of pilots and aircraft.

No subscription required. Fully functional in airplane-mode. No in-app purchases needed. No analytics or tracking.

## Key features

- QNH-QFE conversion
- Precision temperature corrections
- Crossover altitude determination
- Accurate fuel weight/volume conversion
- Turn radius, diameter, and rate calculations
- Sunrise/sunset and twilight time computation
- Barometric altimeter recording

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/e6bjet/id1501315525/reviews.md

### 1/5 — Not worth the price

*2023-11-04*

Good effort, but only offers a couple of calculations and difficult to understand inputs.

**Developer response:** Appreciate the feedback. In release 2.60 we've added an onboarding to better explain using the thumbwheels, and how to make selections. The help function and our website provide still more information.

## Frequently asked questions about E6BJet

### What is E6BJet?

E6BJet is a digital flight computer designed for professional pilots, simulating the functions of traditional aviation slide-rules with added advanced features for modern jet aircraft. It offers comprehensive calculations for navigation, fuel, and time.

### What kind of calculations can E6BJet perform?

E6BJet can perform QNH-QFE conversions, temperature corrections to altitudes, crossover altitude determination, accurate fuel weight/volume conversions for various fuel types, and calculations for turn radius, diameter, and circumference. It also computes sunrise/sunset times.

### Does E6BJet require a subscription?

No, E6BJet does not require a subscription. It is a one-time purchase, and all features are fully functional without ongoing fees. There are also no in-app purchases needed.

### Can E6BJet be used offline?

Yes, E6BJet is fully functional in airplane-mode, meaning it can be used offline. This makes it a reliable tool for pilots who may not have constant internet access during flights.

### What devices does E6BJet support?

E6BJet is available for iPhone and iPod devices. It is designed to leverage the capabilities of these devices, including the altimeter function for barometric recording.

### How often is E6BJet updated?

The latest version of E6BJet is 2.70, last updated on July 24, 2025. The app was initially released on April 11, 2020, indicating regular updates to maintain functionality and add features.

### What is the age rating for E6BJet?

E6BJet has an age rating of 4+. This indicates that the content is generally suitable for all ages, with no mature themes or excessive violence.

### Does E6BJet have ads?

No, E6BJet does not contain advertisements. The app is designed to be ad-free, ensuring an uninterrupted user experience for pilots.

## Version history (last 5 releases)

### 2.70 — 2025-07-24

Fuel density calculations now allow finer-grained fuel temperature changes (now by 0.1-degree increments if desired)

### 2.60 — 2024-04-22

True Airspeed, Pressure Altitude, and Outside/Static Air Temperature values now sync across tabs. Saves having to re-enter the same values on each tab separately.
Temperatures are now adjustable in 0.1-degree increments. Time (in time-speed-distance calculations) is now adjustable in 1-second increments. This allows calculations with greater accuracy.
Devices with an altimeter now display altitude by default. Makes this feature easier to discover.
Fix: iOS now prompts for user permission to read Altimeter data when access is attempted.
An onboarding tutorial explains how to input data, and other essential features.
Minor appearance tweaks.

### 2.50 — 2022-05-02

Calculate turn radius, diameter, circumference and turn rate, from bank angle and speed. Also find required bank for a given turn rate and speed. See turn radius instantly for any altitude/flight level and speed.

### 2.10 — 2021-05-31

Thumbwheel/slider response is now much more natural and sensitive across all tabs.

### 2.0 — 2021-05-17

Version 2 adds sunrise, sunset and civil twilight calculations for any location on Earth except directly at the poles. An editable database of locations is also included, with the ability to export and import locations.
Help text display has been redesigned and substantially expanded.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-04.*