AutoDens vs Metar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AutoDens
This app automatically calculates air density, relative humidity, and air pressure using real-time internet data. It provides essential meteorological information for engines and aircraft, including location, temperature, and dewpoint.
- 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
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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.
Metar
This app visualizes aviation weather reports (METAR and TAF) for airports worldwide. It offers easy-to-understand metrics, weather symbols, crosswind calculations, and flight rule categories. Users can listen to decoded reports, track favorite stations, and view historical weather trends.
- Visualized METAR and TAF data
- Weather symbols and flight rule categories
- Crosswind calculations
- Text-to-speech readout
- Favorite station tracking
- Interactive airport map
- Weather trend graphs
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Visualized METAR and TAF weather information for all airports in the world. Concise summary of everything you need to know about today's aviation weather. METAR features: - Visualized in easy to understand and colourful metrics - Weather symbols for significant weather and clouds, like in a non-aviation weather report - Crosswind calculations, by combining METAR and runway information - Flight rules category: VFR, MVFR, IFR, LIFR - Read out by text-to-speech available, listen to a decoded METAR while doing other things TAF features: - TAF broken down and displayed per hour in a table - Show sunrise/sunset, minimum and maximum temperature Keeping track: - Add your favorite stations to the list, see their weather at a glance - Get observations near your location - Find stations in the interactive map with weather codes - Search airports by ICAO code or name History: - Graphs with weather trends today and yesterday: temperature, visibility, wind speed, QNH - METAR history for the last hours and link to more on the website Airport information: - See information about the airports, like runway directions, elevation, location - If the airport doesn't report a METAR, the nearest station used for calculations Calculations: - All units are customizable units: speed (knots, km/h, m/s, mph), altitude (meters/feet), visibility (kilometers/miles), temperature (Celcius/Fahrenheit) and air pressure (Hectopascal, Inch Hg) - Times are converted to the local time for each airport - Sunrise and sunset are calculated based on the airports latitude/longitude General: - METAR, TAF and airport data are automatically saved for offline use - Available in 6 languages: English, Dutch, Spanish, Portuguese, German and French
Screenshots
Verdict
The clearest difference is price: AutoDens at Free against Metar's $5.99. AutoDens also leads on review sentiment (89% vs 77%) and iOS requirement (7.1 vs 15.1). Metar's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 15 months). On rating, 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
AutoDens is free to download; Metar costs $5.99 up front. AutoDens sells 1 one-off in-app purchase. Metar asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.8 for AutoDens against 4.8 for Metar. Both are backed by a comparable volume of ratings — 185 and 583 respectively. Written reviews are what separate them: 89% of AutoDens's written reviews are positive against 77% of Metar's.
AutoDens ships an update every 15 months, Metar monthly. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.
| Parameter | AutoDens | Metar |
|---|---|---|
| Price | Free — better | $5.99 |
| Rating | 4.8 (185 ratings) | 4.8 (583 ratings) — better |
| Positive reviews | 89.5% of reviews — better | 77.1% of reviews |
| Number of ratings | 185 | 583 — better |
| Update frequency | Every 15 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | — | #19 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 7.1 — better | 15.1 |
| Further details — not scored | ||
| Size | 14 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Optobyte AG | Eveline van den Boom |
Customer experience
AutoDens
Metar
User reviews
AutoDens
From 185 App Store ratingsWhat we love
- 🚀 Fast and efficient calculations
- 👍 Easy to use interface
- ✅ Accurate and reliable
- 💡 Useful for flight preparation
- 👍 Great for pilots
Room to improve
- 🐛 Outdated information
- 🐛 Inconsistent pressure altitude readings
- 🐛 Zeros elevation automatically
- 🐛 Ads cannot be removed despite purchase
- 🐛 Automatic pressure incorrect
Metar
From 583 App Store ratingsWhat we love
- 👍 Easy to read and understand interface
- 📊 Clear visual representation of METAR/TAF data
- 🎯 Quick access to airport weather information
- ⚡ Fast and responsive app performance
- 💰 Reasonable pricing for the features offered
Room to improve
- 🐛 Autocorrect issues with ICAO airport codes
- 🚫 Missing widget functionality (home screen)
- 📍 Incorrect airport data for some locations
- 🔐 Excessive verification prompts and login requirements
- 📊 Visual cloud base calculation error on iPad
Bugs and requests
AutoDens
Reported bugs
8 issues- 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
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- Airport selection interface not convenient
- Automatic update does not work well, updates from distant locations
- Broken support link
Requested features
6 requests- Include a cloud base calculator
- Make app Android compatible
- Output deviation to international standard atmosphere
- Allow setting favorite airports
- Show calculation formulas
Show 1 moreShow fewer
- Fix broken support link
Metar
Reported bugs
8 issues- Autocorrect adds unwanted spaces to airport codes
- Visual cloud base off by 2000 feet on iPad
- Screen goes black when searching for airports
- App badge cannot be cleared
- Browse Older Metars redirects to blank website
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- App defaults to portrait mode on iPad
- Incorrect METAR data shown for nearby airports instead of requested airport
- Excessive 'verify you're human' prompts after donation
Requested features
14 requests- Home screen widget support
- Crosswind with gust information
- Runway alignment feature in app (not just web)
- Dewpoint and temperature meteogram graph
- Runway degree headings display
Show 9 moreShow fewer
- Split-screen support for iPad
- Refresh button on active METAR page
- Ability to sort favorite airports
- Landscape mode default for iPad
- Unit conversion tools (gallons/liters)
- MSFS 2020 integration or compatibility
- Extended METAR history (12+ hours)
- Disable autocorrect option for search
- More comprehensive airport coverage
In-app purchases
AutoDens
- Remove Ads$0.99
Metar
No in-app purchases









