Comparison

Air Density & Altitude vs Eclipse O

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

Head to head
About

Air Density & Altitude

This tool calculates air density, density altitude, and dyno correction factors using weather data from various sources, GPS, or onboard barometers. It's designed for tuners and aviators needing precise atmospheric data for performance calculations.

Highlights
  • Air Density calculation
  • Density Altitude calculation
  • Dyno Correction Factor
  • Integration with weather services
  • GPS and barometer support
  • Manual location selection
  • Bluetooth weather station integration
Features
Read full description

* Seamlessly integrates OpenWeatherMap, MET Meteorologisk institute, Amazon weather data, GPS and phone's onboard barometer to quickly and accurately calculate your air density, density altitude and rest very useful for tuners and aviators data * Works great without cellular connection or barometer * Сan work without access to your current location (we care about your privacy), you can manually select any place in the world on the map and get data for this place *Get weather via Bluetooth using weather stations: Kestrel DROP, Kestrel 5x00, WeatherFlow WEATHERmeter, Skywatch BL This app provides: - Air Density - Density Altitude - Relative Air Density (RAD) - Dew Point - SAE - Dyno Correction Factor - SAE - Relative Horsepower - Station Pressure - Saturation Vapor Pressure - Virtual Temperature - Actual Vapor Pressure - Cumulus Cloud Base Height - Dry Air - Dry Air Pressure - Volumetric Content of Oxygen - Oxygen Pressure This app can obtain automatically the position and altitude to get the temperature, pressure and humidity from the nearest weather station thought internet. Internal barometer is used on supported devices for better precision (from iPhone 6/6+ and newer iPads). If more accuracy is needed, a portable weather station can also be used. Application can run without GPS, WiFi and internet. If you're in internet range, you don't need to supply any data. If you're out of internet range, all you need to supply is the outside air temperature. Great tool for pilots, drag racers, engine tuners, or anyone who needs to conveniently find their Air Density, Density Altitude, Dyno Correction Factor and rest of calculated data. The application is made up of three tabs that are described next: • Results: In this tab are shown: - Air Density - Density Altitude - Relative Air Density (RAD) - Dew Point - SAE - Dyno Correction Factor - SAE - Relative Horsepower - Station Pressure - Saturation Vapor Pressure - Virtual Temperature - Actual Vapor Pressure - Cumulus Cloud Base Height - Dry Air - Dry Air Pressure - Volumetric Content of Oxygen - Oxygen Pressure In addition, the parameters used for the calculations are showed and can be changed (time, temperature, humidity, pressure and altitude). For each of the parameters there is a detailed explanation (just tap on any parameter). • History: This tab contains the history of all calculating data. If you change the weather, the new data will be saved in history. • Weather: In this tab, you can set the values for current temperature, pressure, altitude and humidity. Also this tab allows to use the GPS to get the current position and altitude, and connect to an external service (you can choose one weather data source from several possible) to get the weather conditions of the nearest weather station (temperature, pressure and humidity). You can manually select which type of atmospheric pressure you are working with (for example if you use portable barometers, weather stations): - sea level pressure QNH - sea level pressure QFF - station pressure (barometric pressure) In addition, this application can work with a pressure sensor built into the iPhone. You can see if it is available on your device and turn it on or off. Also, on this tab, you can enable alerts about possible carburetor icing. The app let you use different measure units: ºC y ºF for temperatures, meter and feet for altitude, and mb, hPa, mmHg, inHg for pressures. If you have any doubt about using this App, please, contact us. We answer every question, and we take care of all comments from our users to try to improve our software. We are also users of this application. EULA: http://www.jet-lab.org/terms-of-use/

About

Eclipse O

Easily identify the correct o-rings for your Eclipse paintball markers. This application provides a quick reference to ensure you have the right parts for maintenance and repairs.

Highlights
  • O-ring identification for Eclipse markers
  • Quick reference tool
  • Maintenance and repair assistance
  • Specific to Eclipse paintball products
Features
Read full description

O-Ring Finder is a handy tool for finding the correct o-rings for use in Eclipse paintball markers.

Screenshots

Air Density & Altitude4 screens
Eclipse O3 screens

Verdict

The call

The clearest difference is rating: Eclipse O at 4.7 against Air Density & Altitude's 3.4. Eclipse O also leads on in-app purchases (none vs 2) and review sentiment (83% vs 50%). Air Density & Altitude's advantage is update cadence (every 3 months vs every 6 months) and iOS requirement (9.0 vs 15.6). On price, ratings volume, ads 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

Both are free to download. Air Density & Altitude sells 2 in-app purchases, starting at $0.99 per month. Eclipse O asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Eclipse O holds the better App Store score, 4.7 against 3.4. Both are backed by a comparable volume of ratings — 19 and 11 respectively. Written reviews point the same way: 50% of Air Density & Altitude's written reviews are positive against 83% of Eclipse O's.

UpkeepUpdate frequency

Air Density & Altitude ships an update every 3 months, Eclipse O every 6 months. Both last shipped on November 3, 2026.

Scorecard6 real differences · 4 level
Air Density & Altitude versus Eclipse O: the parameters behind the verdict, then further details
ParameterAir Density & AltitudeEclipse O
PriceFreeFree
Rating3.4 (19 ratings)4.7 (11 ratings) — better
Positive reviews50.0% of reviews83.3% of reviews — better
Number of ratings19 — better11
Update frequencyEvery 3 months — betterEvery 6 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15.6
Further details — not scored
Size40 MB308 MB
Age rating4+4+
DeveloperBallistic Solutions LLCPlanet Eclipse Ltd

Customer experience

Air Density & Altitude

All ratings19 ratings
Positive57.9%
Neutral5.3%
Negative36.8%
Written reviews14 reviews
Positive50.0%
Neutral7.1%
Negative42.9%

Eclipse O

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

In-app purchases

2 purchases

Air Density & Altitude

Subscriptions2
  • One Month7 Days trial$0.991 Month
  • One Year$3.491 Year
None

Eclipse O

No in-app purchases

Questions

Is Air Density & Altitude free?
Air Density & Altitude is free to download, with in-app purchases available.
Is Eclipse O free?
Eclipse O is free to download, with no in-app purchases.
Which has better reviews, Air Density & Altitude or Eclipse O?
Eclipse O is rated higher. Air Density & Altitude averages 3.4 out of 5 from 19 ratings, while Eclipse O averages 4.7 from 11 ratings.
Do Air Density & Altitude or Eclipse O have ads?
Neither Air Density & Altitude nor Eclipse O shows ads.
Which is updated more often, Air Density & Altitude or Eclipse O?
Air Density & Altitude ships an update every 3 months, and Eclipse O every 6 months. Most recently, Air Density & Altitude was updated on November 3, 2026 and Eclipse O on November 3, 2026.

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