BMSNav vs Quick DA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BMSNav
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BMSNav is a companion app for the Falcon BMS flight simulator that displays kneeboards, briefings, and various navigation aids on a mobile device. It was built primarily to act as a sort of physical kneeboard, obviating the need to activate the pilot model and to flip through the in-game kneeboards. Note that in order to use BMSNav, you must run the accompanying server (BMSNavServer) on the same machine as BMS itself. The server monitors the kneeboard files for the selected theater and automatically [re]generates the images any time a change is made in Weapon Delivery Planner. It also monitors the briefings directory and grabs the latest HTML file whenever the user "prints" the briefing in BMS. As such, there's no need to copy/paste files or manually convert images and transfer them to your mobile device. Simply run the server, select a theater, and you're set! Detailed installation and usage instructions can be found at the BMSNav website... https://rsedev.net/bmsnav Good luck on your next mission!
Quick DA
Calculate density altitude using onboard sensors and user inputs. Store and edit past calculations in a data log. Supports various input methods and map views for precise environmental data.
- Density Altitude calculation
- Data Log for storing calculations
- GPS and Barometric Pressure Sensor integration
- Weather station data for temperature and humidity
- Map screen for elevation selection
- Multiple input options for pressure
- Unit selection (Feet/Meters, Fahrenheit/Celsius)
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Quick DA uses your devices onboards sensors (GPS and Barometric Pressure Sensor) and user data inputs making it simple to calculate Density Altitude. Store your DA calculations into the Data Log for later reference, or load past Data Logs back into the Environment Tab to further edit your DA calculation. Calculate Density Altitude using: -Ambient Air Temperature + Elevation -Ambient Air Temperature + Barometric Station Pressure -Ambient Air Temperature + Barometric Station Pressure + Relative Humidity Features and Functions: DA calculation, Location and Time the calculation was created prominently displayed Use the Environment input options that work for you Get Ambient Air Temperature from the nearest weather station Receive your current Field Elevation using the device’s GPS Use the Map Screen Feature to select a point on the map and receive its elevation Select between Street, Terrain, and Satellite map options Use your device’s Barometric Pressure Sensor for real-time pressure readings Use the Advanced Pressure Input option for converting Sea Level Adjusted Pressure Get your current Relative Humidity from the nearest weather station Press the + action button to create a Data Log of your DA Calculation Data Log entries display: location, date, time, DA, and input variables used to calculate DA Use the arrow action button to load data back into Environment Tab Use the Clear Button to clear all Environment Tab inputs User selectable Dark, Color, and Light app themes Use Feet or Meters and Fahrenheit or Celsius Quick DA uses Apple MapKit for map interaction, search, road, and satellite imagery. Terrain tile overlays are powered by MapTiler OSM Contributors. Elevation data for selected locations is provided by the USGS Elevation Point Query Service. This app does not have any in-app purchases
Screenshots
Verdict
The clearest difference is price: BMSNav at Free against Quick DA's $2.99. BMSNav also leads on iOS requirement (13.4 vs 17.6). Quick DA's advantage is update cadence (every 2 months vs every 6 months) and chart position (#175 vs unranked). On 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
BMSNav is free to download; Quick DA costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
BMSNav ships an update every 6 months, Quick DA every 2 months. The most recent releases landed on September 11, 2026 and September 15, 2026 respectively.
| Parameter | BMSNav | Quick DA |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Best chart rank | — | #175 — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.4 — better | 17.6 |
| Further details — not scored | ||
| Size | 26 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Sean Eidemiller | James Watts |
In-app purchases
BMSNav
No in-app purchases
Quick DA
No in-app purchases





