FlyQ+ EFB vs Density Altitude +
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FlyQ+ EFB
This aviation app simplifies flying with integrated features like a glide ring, graphical weather, and a detailed global map. It offers advanced weather analysis, augmented reality situational awareness, and wireless data transfer to certified avionics. Track flights, analyze performance, and receive GPS anomaly detection for enhanced safety.
- Global Digital Map with adjustable detail
- 4D Predictive Weather analysis
- Augmented Reality (AR) situational awareness
- Wireless data transfer to certified avionics
- Visual Logbook and Post Flight Playback
- NaviGuard GPS anomaly detection
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FlyQ+ EFB is a top-rated aviation app because it makes your flying easier and safer by thoughtfully integrating powerful features in a way that minimizes the number of screen taps and uses larger fonts to increase readability. New features such as a glide ring, graphical weather briefing, ability to download two data cycles, and a navlog that expands/collapses airways/SIDs/STARs make flying safer and easier than ever before! The Global Digital Map shows airports, airways, airspace, navaids, and waypoints from all around the world. Text rotates so it's always right-side up and the level of detail adapts to the zoom level. Our exceptional "4D Predictive Weather" system uses a Timeline and Altitude Slider to help you analyze weather at different times - both past and future - and at different altitudes. 17 weather layers from both the Internet and ADS-B (e.g. Radar, Icing, Turbulence, PIREPs, Winds Aloft, Surface Winds, Surface Analysis, Satellite, and more), many tied to the Timeline and Altitude Slider, give you unprecedented pre-flight and in-flight safety. Supports more than 20 ADS-B and in-panel devices: Stratus 3, Avidyne, Dynon, Stratux, and more. The exclusive Augmented Reality (AR) feature provides situational awareness you'd previously only seen in sci-fi movies. The Slingshot wireless system means FlyQ+ supplies maps, plates, and apt diagrams wirelessly to certified systems from BendixKing. The Visual Logbook and Post Flight Playback / Analysis Graphs add a whole new dimension to your flying. Optionally connect with your friends to "see" and even replay their flights. CFI's can track student progress and remotely send endorsements. Other key features include split screen, 3D synthetic vision, plates on the map, more than 4,600 airport diagrams, rich Documents support, extended runways, distance measurement, fuel prices, NOTAMS, wind-optimized flight planning, and plates for Mexico and Central America. NEW! NaviGuard GPS anomaly detection guards against GPS spoofing and jamming > Maps Your Way + Digital, 2D maps, 3D Syn Vis, Augmented Reality + Sectionals and IFR charts + TACs + Photo, road, terrain maps + 17 Weather Layers + Flight Track + Fuel Prices + TFRs + Obstacle and Terrain Avoidance + ADS-B Traffic and Weather + Extended runways with right-pattern indicators + Procedures on map + Rings / Extended Course Line + CAP grid + Heli and Gulf of Mexico charts + VFR Flyways + Syn Vis includes HITS boxes, EFIS display, TAWS, Obstacles, and AHRS support. Night Mode preserves your night vision. Split screen (iPad only) and single screen. > Procedures NEW! FlyQ+ includes the same FAA DO-200B certified Seattle Avionics geo-referenced approach plates and apt diagrams that we supply to certified avionics from Honeywell and Aspen. Split screen can show a map and a procedure simultaneously. > Flight Planning that Saves Time and Money 1. Automatically uses recently cleared ATC routes 2. Automatically plans fuel stops based on lowest cost 3. Uses expected winds to plot the fastest course 4. CAP/SAR patterns 5. Exchange flight plans with Dynon SkyView, Avidyne, and Aspen 6. Practice with X-Plane or MS Flight Sim / Prepar3D > Weather Amazing "4D Predictive Weather" uses a Timeline and Altitude slider to make detailed pre-flight and in-flight analysis easy. The Graphical Wind Optimizer uses red and green bars to show the headwind or tailwind at different altitudes. Also includes an extensive gallery of weather images. > Airport Information The Airport screen concisely shows key operational info, sat images, and rwy diagrams on a single screen. Weather, approach procedures, A/FD, and FBO info are just a tap away. Includes more than 4,600 SA Airport Diagrams. > Data Manager FlyQ+ makes it painless to download new data every month: spin and zoom a 3D globe to visually select the states you need. > Try it before you buy it Experience everything FlyQ+ EFB offers with a free 30-day subscription.
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.
- Density Altitude calculation
- Relative Air Density (RAD)
- Altimeter setting
- Humidity calculations
- GPS and barometer integration
- Location search
- Offline functionality
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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.
Screenshots
Verdict
The clearest difference is price: FlyQ+ EFB at Free against Density Altitude +'s $3.99. FlyQ+ EFB also leads on update cadence (every 2 months vs every 4 months). Density Altitude +'s advantage is rating (4.8 vs 4.1) and in-app purchases (none vs 15). On ratings volume, ads, chart position 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
FlyQ+ EFB is free to download; Density Altitude + costs $3.99 up front. FlyQ+ EFB sells 15 one-off in-app purchases. Density Altitude + asks for nothing beyond the download.
Density Altitude + holds the better App Store score, 4.8 against 4.1. Both are backed by a comparable volume of ratings — 892 and 1K respectively. Written reviews point the same way: 72% of FlyQ+ EFB's written reviews are positive against 88% of Density Altitude +'s.
FlyQ+ EFB ships an update every 2 months, Density Altitude + every 4 months. The most recent releases landed on September 21, 2026 and September 24, 2026 respectively.
| Parameter | FlyQ+ EFB | Density Altitude + |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 4.1 (892 ratings) | 4.8 (1K ratings) — better |
| Positive reviews | 71.6% of reviews | 87.5% of reviews — better |
| Number of ratings | 892 | 1K — better |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | #184 | #139 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 494 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Seattle Avionics, Inc. | Rate Of Climb Industries |
Customer experience
FlyQ+ EFB
Density Altitude +
Bugs and requests
FlyQ+ EFB
Not enough reviews yet to summarise bugs or 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
In-app purchases
FlyQ+ EFB
- US IFR 1 month upgrade$8.99
- US IFR 2 month upgrade$17.99
- US IFR 3 month upgrade$24.99
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- US IFR 4 month upgrade$34.99
- US IFR 5 month upgrade$44.99
- US IFR 6 month upgrade$49.99
- US IFR 7 month upgrade$59.99
- US IFR 8 month upgrade$69.99
- US IFR 9 month upgrade$79.99
- US IFR 10 month upgrade$89.99
- US IFR 11 month upgrade$99.99
- US VFR 12 month subscription$99.99
- US IFR 12 month upgrade$109.99
- US IFR 13 month upgrade$109.99
- US VFR and IFR 12 month subscription$199.99
Density Altitude +
No in-app purchases









