Comparison

E6BJet vs Nautical Calculator Pro

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

Head to head
About

E6BJet

This aviation tool simulates professional flight computers for modern jet aircraft, offering advanced calculations for navigation, fuel, and time. It features a user-friendly interface and displays results in multiple aviation units simultaneously.

Highlights
  • 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
Features
Read full description

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.

About

Nautical Calculator Pro

This app assists with critical marine navigation and maneuvering calculations. It offers tools for route planning, collision avoidance, and understanding international maritime regulations. Features include real-time ship movement, GPS, and a glossary of marine terms.

Highlights
  • Real-time ship movement
  • Route planning
  • Collision avoidance calculations
  • Nautical Almanac
  • COLREG rules
  • Unit conversion
  • Offline GPS
Features
Read full description

The application to assist in solving the most important marine problems. - For Marine Navigation: +Real-Time Ship Movement; +Route Plan; + Mercator Sailing; + Greate Circle Sailing; + Meridional parts; + Plane Sailing; + Traverse Sailing. + Wheel over; + Current and wind sailing; + Allowing for current and wind; + Calculate true wind and apparent wind on a ship running; + Nautical Almanac; + Two Lop Fix; + Three Lop Fix; + Correcting marine sextant altitude of sun and stars; + Probability Distribution Function; + Standard Deviation and Error; + Offline GPS; - For Maneuvering : -Avoid collisions ; -Change of station in cases: + with time specified; + with speed specified; + with course specified; + Course and speed of another ship; + Closest point of approach(CPA); + Ability to reach another ship going faster; + Close or open to another ship in cases : - as quickly as possible; - on a constant bearing; - with time specified; + Maneuver to intercept a target ship going faster; + Maneuver to intercept ahead a target ship; + Close to another ship as close as possible; +Keep watch for a target ship within a range of distances; +Maneuvering with added calculating of turning; +Bearing and distance to another ship in advance; - For Learning : +International regulations for preventing collisions at sea (COLREG) include Rules; Lights signs; Shapes signs and Sounds signs; + Marine signalizations include Flag signaling; Morse signaling by hand; Morse code; + Maritime buoyage system; + Unit Conversion for Maritime; + Glossary of Marine Navigation; +Maritime Theory; +Global Lighthouses System; author Vu Cong The. vucongthe@gmail.com - Các tính toán hàng hải và vận động tàu, bao gồm : +Dịch chuyển của tàu theo thời gian thật; +Lập kế hoạch hành trình; +Hành trình theo hải đồ Mercator; +Hành trình theo cung vòng lớn; +Vĩ độ tiến; +Dự tính vị trí tàu một hướng và nhiều hướng; +Tính và đè độ dạt gió dòng; +Tính toán lượn vòng của tàu; +Tính toán gió thực và gió biểu kiến trên tàu đang hành trình; +Lịch thiên văn hàng hải; +Phương pháp hai đường vị trí. +Hiệu chỉnh độ cao mặt trời và sao đo bằng sextant hàng hải; +Tính hàm phân phối xác suất; +Các tính toán bổ trợ; +Tính sai số chuẩn và độ lệch chuẩn; +Hướng đi, vận tốc của tàu mục tiêu; +Tránh va; +Các thông số ở điểm tiếp cận CPA; +Các thông số trận địa với thời gian hoặc khoảng cách cho trước; + Xác định khả năng tiếp cận tàu mục tiêu có vận tốc lớn hơn; +Thay đổi khoảng cách tới một tàu khác với : - Thời gian ngắn nhất; - Thời gian cho trước. - Phương vị không đổi; +Vận động cắt mũi hoặc lái một tàu mục tiêu có vận tốc lớn hơn; +Vận động cắt mũi một tàu mục tiêu; +Tiếp cận một tàu khác ở cự ly ngắn nhất; +Tính các yếu tố trận địa với thời gian hoặc cự ly cho trước; +Thay đổi trận địa trong các trường hợp: -với thời gian cho trước; -với vận tốc cho trước; -với hướng đi cho trước; +Vận động trong dải khoảng cách; +Tính toán lượn vòng trong vận động; -Tra cứu hàng hải bao gồm : + Qui tắc tránh va quốc tế (COLREG) : Nội dung các điều luật, Tín hiệu đèn, Dấu hiệu, Tín hiệu âm thanh; +Thông hiệu hàng hải : Thông tin cờ hiệu, thông tin cờ tay, mã morse; +Hệ thống phao tiêu hàng hải; +Thuật ngữ Tiếng Anh Hàng hải; +Chuyển đổi đơn vị trong hàng hải; +Lý thuyết hàng hải; +Hệ thống hải đăng toàn cầu; +Hệ thống các cảng container bận rộn nhất; Các giao diện hiển thị hai ngôn ngữ : Tiếng Anh và tiếng Việt Tác giả : Vũ Công Thế. vucongthe@gmail.com

Screenshots

E6BJet4 screens
Nautical Calculator Pro4 screens

Verdict

The call

The clearest difference is review sentiment: Nautical Calculator Pro at 100% against E6BJet's 0%. Nautical Calculator Pro also leads on rating (5.0 vs 1.0) and update cadence (fortnightly vs every 3 months). E6BJet's advantage is price ($5.99 vs $14.99) and ads (none vs shown). On ratings volume, in-app purchases, monetization model and device support there is nothing between them.

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

E6BJet costs $5.99 and Nautical Calculator Pro $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Nautical Calculator Pro holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 0% of E6BJet's written reviews are positive against 100% of Nautical Calculator Pro's.

UpkeepUpdate frequency

E6BJet ships an update every 3 months, Nautical Calculator Pro fortnightly. The most recent releases landed on October 10, 2026 and October 29, 2026 respectively.

Scorecard6 real differences · 4 level
E6BJet versus Nautical Calculator Pro: the parameters behind the verdict, then further details
ParameterE6BJetNautical Calculator Pro
Price$5.99 — better$14.99
Rating1.0 (1 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings11
Update frequencyEvery 3 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size13 MB67 MB
Age rating4+4+
DeveloperWolf SeldnerThe Vu Cong

Customer experience

E6BJet

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Nautical Calculator Pro

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

E6BJet

No in-app purchases

None

Nautical Calculator Pro

No in-app purchases

Questions

Is E6BJet free?
E6BJet costs $5.99, with no in-app purchases.
Is Nautical Calculator Pro free?
Nautical Calculator Pro costs $14.99, with no in-app purchases.
Which has better reviews, E6BJet or Nautical Calculator Pro?
Nautical Calculator Pro is rated higher. E6BJet averages 1.0 out of 5 from 1 ratings, while Nautical Calculator Pro averages 5.0 from 1 ratings.
Do E6BJet or Nautical Calculator Pro have ads?
Nautical Calculator Pro shows ads; E6BJet does not.
Which is updated more often, E6BJet or Nautical Calculator Pro?
E6BJet ships an update every 3 months, and Nautical Calculator Pro fortnightly. Most recently, E6BJet was updated on October 10, 2026 and Nautical Calculator Pro on October 29, 2026.

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