# iFly EFB vs Density Altitude +

The clearest difference is price: iFly EFB at Free against Density Altitude +'s $3.99. iFly EFB also leads on update cadence (every 3 weeks vs every 4 months). Density Altitude +'s advantage is in-app purchases (none vs 8) and chart position (#50 vs unranked). On rating, review sentiment, ratings volume and ads there is nothing between them.

iFly EFB is free to download; Density Altitude + costs $3.99 up front. iFly EFB sells 8 one-off in-app purchases. Density Altitude + asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for iFly EFB against 4.8 for Density Altitude +. Both are backed by a comparable volume of ratings — 353 and 1K respectively. Written reviews are what separate them: 90% of iFly EFB's written reviews are positive against 88% of Density Altitude +'s.

iFly EFB ships an update every 3 weeks, Density Altitude + every 4 months. The most recent releases landed on October 12, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | iFly EFB | Density Altitude + |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | [4.7 (353 ratings)](https://appshunter.io/ios/app/ifly-efb/id655202847/reviews) | **[4.8 (1K ratings)](https://appshunter.io/ios/app/density-altitude-plus/id994402197/reviews)** |
| Number of ratings | 353 | **1K** |
| Positive reviews | **89.9% of reviews** | 87.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | — | **#50** |
| Size | 107 MB | 4 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Adventure Pilot, LLC](https://appshunter.io/developer/655202870) | [Rate Of Climb Industries](https://appshunter.io/developer/528748185) |

## What reviewers say

### iFly EFB

[App page](https://appshunter.io/ios/app/ifly-efb/id655202847)

This app provides pilots with essential flight information in an easy-to-use format for both VFR and IFR flying. It offers advanced navigation features, real-time weather, and safety alerts to enhance situational awareness and simplify flight planning.

**Highlights:** Geo-Reference Approach Plates & Airport Diagrams, 3D Synthetic Vision / EFIS Mode, Terrain, Obstructions, Traffic, Airspace Alerts, ADS-B Support, AutoTaxi+ for Safe Taxing, RealView Airport Imagery, Complete VFR & IFR Databases and Charts

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iPad Add-On Subscription (1 Year) | $24.99 | one-time |
| IFR iPad Subscription Upgrade (1 Year) | $49.99 | one-time |
| VFR iPad Subscription (1 Year) | $79.99 | one-time |
| Base VFR Subscription | $94.99 | one-time |
| VFR/MP Subscription | $124.99 | one-time |
| VFR+IFR iPad Subscription (1 Year) | $129.99 | one-time |
| VFR/IFR Subscription | $149.99 | one-time |
| VFR/IFR/MP Subscription | $179.99 | one-time |

**What reviewers like**

- 👍 Extremely intuitive and easy to use interface
- 💰 Very affordable pricing compared to competitors
- 🎨 Highly customizable instrument layouts and display
- 📊 Excellent flight planning capabilities
- 🗺️ Clear, sharp, high-resolution maps and charts

**What reviewers complain about**

- 🐛 App occasionally locks up and requires restart
- 📍 Inaccurate and outdated FBO information
- 🗺️ Limited international/Canadian map coverage
- 🎨 Dated user interface design (1990s aesthetic)
- 📡 GPS connectivity issues on iPad iOS 18+

**Reported bugs**

- App freezes when navigating between menus
- Settings not saved after app lock
- GPS weak signal and satellite lock issues on iOS 18+
- Terrain loading delays during scrolling
- Compatibility issues with some external GPS devices (Dual 150)

**Requested features**

- Logbook functionality
- Sunset/sunrise times display
- One-button night mode
- Annotation tools for approach plates
- Scratch pad for ATC notes


### Density Altitude +

[App page](https://appshunter.io/ios/app/density-altitude-plus/id994402197)

**Currently charting:** #50 Top Paid · Navigation (US App Store)

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.

**Highlights:** Density Altitude calculation, Relative Air Density (RAD), Altimeter setting, Humidity calculations, GPS and barometer integration, Location search, Offline functionality

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Great app for simplicity and ease of use
- 🔒 No data collected from the app
- 👍 Accurate and consistent
- 👍 Excellent for car racing
- 👍 Provides increased satellite accuracy

**What reviewers complain about**

- 🐛 GPS elevation doesn't always update reliably
- 🔧 Can't manually change location

**Reported bugs**

- GPS elevation doesn't always update reliably
- No way to set altitude

**Requested features**

- Apple Watch Widget
- Barometric pressure
- Relative humidity for current location
- Ability to manually enter values


## Frequently asked questions

### Is iFly EFB free?

iFly EFB is free to download, with in-app purchases available.

### Is Density Altitude + free?

Density Altitude + costs $3.99, with no in-app purchases.

### Which has better reviews, iFly EFB or Density Altitude +?

Density Altitude + is rated higher. iFly EFB averages 4.7 out of 5 from 353 ratings, while Density Altitude + averages 4.8 from 1K ratings.

### Do iFly EFB or Density Altitude + have ads?

Neither iFly EFB nor Density Altitude + shows ads.

### Which is updated more often, iFly EFB or Density Altitude +?

iFly EFB ships an update every 3 weeks, and Density Altitude + every 4 months. Most recently, iFly EFB was updated on October 12, 2026 and Density Altitude + on October 16, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*