# AutoDens

> Calculates air density and meteorological data for engines and aircraft. (iPhone/iPad app by Optobyte AG.)

- Source: https://appshunter.io/ios/app/autodens/id560993349 (this page in markdown: same URL + `.md`)
- Developer: [Optobyte AG](https://appshunter.io/developer/359670371)
- Category: Weather, Utilities
- Price: Free with in-app purchases
- Rating: 4.80/5 from 184 App Store ratings · 76 written reviews indexed
- Age rating: 4+
- Requires: iOS 7.1 · 14 MB
- Languages: German (Germany), American English
- Released: 2012-09-18
- Data updated: 2026-09-12
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/autodens/id560993349/reviews.md

## What is AutoDens?

AutoDens does all the air density calculation at just one single touch.

Temperature, air pressure and humidity have affects to the performance of engines and aircrafts. AutoDens helps to get all the required parameters automaticly via the internet and calculates the current air density, relative humidity and air pressure. It also shows your geographic position, current temperature, dewpoint, physical elevation and the barometric pressure (QNH).

Features:
- automatic, airport and offline (manual) mode
- getting current location
- loading meteo-data (METAR) from the nearest airport
- calculating meteo-values for the current geo position (using up to 4 different airports nearby)
- shows METAR of nearest airport in raw format
- calculates density altitude, pressure altitude, relative humidity, air density and QFE
- choose your preferred units (celsius / fahrenheit, hectopascal/inches of mercury, feet/meters)
- database with more than 40'000 airports worldwide

AutoDens might help you as a efficient tool for calculating air density. But since it relays on a working infrastructure, it might not produce accurate results in all situations (internet connection could fail or some odd weather conditions might not act as it is calculated in ISA standard-atmoshpere). Do not use this as your single source for flight preparation.

## Key features

- Automatic, airport, and manual modes
- Real-time location and weather data
- METAR data from nearest airports
- Calculates density altitude and pressure altitude
- Supports custom units
- Extensive airport database

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## What do users think of AutoDens?

Overall sentiment: positive

**Pros**

- 🚀 Fast and efficient calculations
- 👍 Easy to use interface
- ✅ Accurate and reliable
- 💡 Useful for flight preparation
- 👍 Great for pilots
- 👍 Helpful for performance tuning
- 👍 Swiss made quality
- 👍 Clear and concise tool
- 👍 Essential for aviators
- 👍 Simple and effective
- 👍 Reliable density altitude calculations
- 👍 Precise and accurate
- 👍 Beats traditional methods
- 👍 Good for carb tuners
- 👍 Supports performance tuning
- 👍 Makes complex concepts easy
- 👍 Brilliant for decision making
- 👍 Handles neglected calculations
- 👍 Marvellous app
- 👍 Easier than E6B
- 👍 Accurate for shooting
- 👍 Indispensable for inspectors
- 👍 Simple and fast altitude determination
- 👍 Useful for helicopter flying
- 👍 Accurate comparison
- 👍 Great for long range shooting
- 👍 Helpful final check
- 👍 Super app, indispensable
- 👍 Great for flight school
- 👍 Nice free app
- 👍 Works as advertised
- 👍 One-click calculation
- 👍 Works awesome

**Cons**

- 🐛 Outdated information
- 🐛 Inconsistent pressure altitude readings
- 🐛 Zeros elevation automatically
- 🐛 Ads cannot be removed despite purchase
- 🐛 Automatic pressure incorrect
- 🐛 Airport selection interface inconvenient
- 🐛 Limited functionality for other locations
- 🐛 Automatic update issues
- 🐛 Support link broken

**Commonly reported bugs**

- Outdated identifier (K00V instead of KFLY)
- Inconsistent Pressure Altitude readings on different phones
- App zeros elevation every time
- Ads not removed after purchase
- Automatic pressure incorrect in automatic mode
- Airport selection interface not convenient
- Automatic update does not work well, updates from distant locations
- Broken support link

**Most requested features**

- Include a cloud base calculator
- Make app Android compatible
- Output deviation to international standard atmosphere
- Allow setting favorite airports
- Show calculation formulas
- Fix broken support link

## Recent user reviews (10 of 76)

All indexed reviews: https://appshunter.io/ios/app/autodens/id560993349/reviews.md

### 2/5 — Meadow lake outdated

*2025-02-11*

KFLY is and has been the new identifier and has been for several years, NOT K00V

### 5/5 — Useful Tool

*2024-07-17*

I find this is a useful tool to me. I use this as a reference checker. Enjoy.

### 5/5 — Klein und fein

*2023-06-17*

Sehr nützliches und übersichtliches Tool!

### 5/5 — Critical flight!   Thanks

*2022-10-10*

This is the beautiful way to insure safety and FAA compliance. Thanks

### 5/5 — … schnelle und hilfreich im Fliegeralltag

*2022-06-19*

Eine schnelle und sichere Hilfe im fliegerischen Alltag.

### 5/5 — Reliable

*2021-04-19*

Does what it is supposed to do very reliable.
...and Swiss made...I like it!

### 4/5 — Cloud base

*2021-02-26, version 2.2*

Useful app- could you include a cloud base calc as well. The required elements to do the calculations are on the app.

### 5/5 — Top

*2020-12-26*

Sehr übersichtlich, es hilft bei der Flug-Vorbereitung. Und mit 1 EUR unterstützt man die App und die Werbung ist weg. Sehr zu empfehlen!

### 5/5 — Great

*2020-12-13*

This is a Fantastic tool for aviators, I highly recommend it to everyone who flies a plane.

### 5/5 — Klasse

*2020-10-22*

Hilfreich, übersichtlich und schnell

## Frequently asked questions about AutoDens

### What does AutoDens do?

AutoDens automatically calculates air density, relative humidity, and air pressure. It retrieves real-time meteorological data from the internet, including temperature, air pressure, and humidity, to provide accurate readings for engines and aircraft.

### What are the key features of AutoDens?

Key features include automatic, airport, and manual calculation modes, real-time location tracking, loading METAR data from nearby airports, and calculations for density altitude, pressure altitude, relative humidity, air density, and QFE. It also allows users to choose their preferred units and has a database of over 40,000 airports.

### Is AutoDens free to use?

The application is free to download and use, but it offers in-app purchases. These purchases likely unlock additional features or remove limitations, providing enhanced functionality for users.

### What devices is AutoDens compatible with?

While specific operating system versions are not detailed, the application is designed for mobile devices. It relies on internet connectivity for certain features, suggesting it is intended for smartphones and tablets that can access the internet.

### Can AutoDens be used for flight preparation?

AutoDens can be a helpful tool for calculating air density and related meteorological data. However, the developers caution that it relies on a working internet infrastructure and may not always produce accurate results due to potential connection failures or unusual weather conditions. It should not be used as the sole source for flight preparation.

## Version history (last 4 releases)

### 2.2 — 2016-06-22

This update from Apple will improve the functionality of this app. No new features are included.

Options added in the settings
minor bug fixed

### 2.1 — 2016-06-01

Airport database updated.
A notice is shown in case of outdated meteo data.
Minor layout changes.

### 2.0 — 2015-03-10

Airport-database
portrait and landscape screen support
support for the built in barometric sensor (iPhone 6)
new screen layout
all settings are saved persistent

### 1.0 — 2012-09-18

No release notes.

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## More apps by Optobyte AG

- [Stöck Wyys Stich mobile](https://appshunter.io/ios/app/stock-wyys-stich-mobile/id359670368)
- [Stöck Wyys Stich pro](https://appshunter.io/ios/app/stock-wyys-stich-pro/id1178569313)

All apps by Optobyte AG: https://appshunter.io/developer/359670371

## Related topics

[density altitude calculators](https://appshunter.io/ios/topics/density-altitude-calculators) · [density altitude](https://appshunter.io/ios/topics/density-altitude) · [air density](https://appshunter.io/ios/topics/air-density) · [deacon](https://appshunter.io/ios/topics/deacon) · [wvss](https://appshunter.io/ios/topics/wvss) · [air density calculator](https://appshunter.io/ios/topics/air-density-calculator)

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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 2026-09-12.*