Comparison

Density Altitude + vs E6BJet

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

Head to head
About

Density Altitude +

This app calculates density altitude and other atmospheric data using location, GPS, and onboard sensors. It's accurate even without a cellular connection and useful for pilots, racers, and sports enthusiasts.

Highlights
  • Density Altitude calculation
  • Relative Air Density (RAD)
  • Altimeter setting
  • Humidity calculations
  • GPS and barometer integration
  • Location search
  • Offline functionality
Features
Currently charting
Read full description

Instant and location accurate Density Altitude calculator/instrument app for iPhone and iPad that also finds relative air density (RAD), altimeter setting, relative humidity, specific humidity (grains/lb) and more. Super useful for pilots, especially in the backcountry. Many other uses for engine tuning, racing, sports, etc. * Seamlessly integrates weather data, GPS and your phone's onboard barometer to quickly and accurately calculate your density altitude, altimeter setting, relative air density, and more. * Takes humidity into account in all calculations, making it more accurate than the typical dry bulb approximation formula used by AWOS/ASOS, etc. * Works anywhere. Great without cellular connection as well, which makes it all the more useful in the backcountry and far away from ASOS/AWOS stations. * Location Search: Find atmospheric data (Density Altitude, etc.) at any point on Earth, from anywhere! Data Sensed and Calculated (all calculated with humidity): * Density Altitude * GPS Altitude * Temperature * Altimeter Setting * Absolute Pressure * Dew Point * Relative Humidity * Specific Humidity (grains/pound) * Air Density * Relative Air Density (RAD) * Dyno Correction The quickest way to get your Density Altitude! On the iPhone 6/6+ and newer iPads, it will use the built-in barometer and GPS. If you're in cell range, you don't need to supply any data. If you're out of cell range, all you need to supply is the outside air temperature. Designed not to need an internet connection, so it will work anytime and anywhere you need it. Great tool for pilots, drag racers, engine tuners, golfers, or anyone who needs to conveniently find their Density Altitude, Altimeter Setting, Relative Aid Density (RAD), Specific Humidity or Absolute Pressure. No ads or in-app purchases. We love feedback! Email us at densityaltitude@rateofclimb.com Disclaimer: Density Altitude+ uses available third party weather and elevation data to calculate atmospheric measurements, but Rate Of Climb does not guarantee that the original sources (including the National Weather Service, FAA and others) have provided data that is accurate, complete, timely, or properly formatted. Users should always contact official sources for the most accurate and timely updates. The service is not intended for use in situations in which the failure of the service could lead to death, personal injury, or severe physical or environmental damage. Your use of this application is at your sole risk.

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
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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.

Screenshots

Density Altitude +4 screens
E6BJet4 screens

Verdict

The call

The clearest difference is review sentiment: Density Altitude + at 88% against E6BJet's 0%. Density Altitude + also leads on rating (4.8 vs 1.0) and ratings volume (1K vs 1). On update cadence, ads, in-app purchases 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

Density Altitude + costs $3.99 and E6BJet $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Density Altitude + holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Density Altitude + has 1K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 88% of Density Altitude +'s written reviews are positive against 0% of E6BJet's.

UpkeepUpdate frequency

Density Altitude + ships an update every 4 months, E6BJet every 3 months. The most recent releases landed on September 24, 2026 and June 4, 2026 respectively.

Scorecard6 real differences · 5 level
Density Altitude + versus E6BJet: the parameters behind the verdict, then further details
ParameterDensity Altitude +E6BJet
Price$3.99 — better$5.99
Rating4.8 (1K ratings) — better1.0 (1 ratings)
Positive reviews87.5% of reviews — better0.0% of reviews
Number of ratings1K — better1
Update frequencyEvery 4 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
Best chart rank#24 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.013.0
Further details — not scored
Size4 MB13 MB
Age rating4+4+
DeveloperRate Of Climb IndustriesWolf Seldner

Customer experience

Density Altitude +

All ratings1,028 ratings
Positive97.3%
Neutral1.6%
Negative1.2%
Written reviews24 reviews
Positive87.5%
Neutral4.2%
Negative8.3%

E6BJet

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

Bugs and requests

Density Altitude +

Reported bugs

2 issues
  • GPS elevation doesn't always update reliably
  • No way to set altitude

Requested features

4 requests
  • Apple Watch Widget
  • Barometric pressure
  • Relative humidity for current location
  • Ability to manually enter values

E6BJet

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Density Altitude +

No in-app purchases

None

E6BJet

No in-app purchases

Questions

Is Density Altitude + free?
Density Altitude + costs $3.99, with no in-app purchases.
Is E6BJet free?
E6BJet costs $5.99, with no in-app purchases.
Which has better reviews, Density Altitude + or E6BJet?
Density Altitude + is rated higher. Density Altitude + averages 4.8 out of 5 from 1K ratings, while E6BJet averages 1.0 from 1 ratings.
Do Density Altitude + or E6BJet have ads?
Neither Density Altitude + nor E6BJet shows ads.
Which is updated more often, Density Altitude + or E6BJet?
Density Altitude + ships an update every 4 months, and E6BJet every 3 months. Most recently, Density Altitude + was updated on September 24, 2026 and E6BJet on June 4, 2026.

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