# ErgoBlue vs Density Altitude Calculators

The clearest difference is review sentiment: ErgoBlue at 100% against Density Altitude Calculators's 0%. ErgoBlue also leads on price (Free vs $2.99) and rating (5.0 vs 4.8). Density Altitude Calculators's advantage is in-app purchases (none vs 4) and ratings volume (4 vs 1). On ads, device support and iOS requirement there is nothing between them.

ErgoBlue is free to download; Density Altitude Calculators costs $2.99 up front. ErgoBlue sells 4 in-app purchases, starting at $7.99 per month. Density Altitude Calculators asks for nothing beyond the download.

ErgoBlue holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews point the same way: 100% of ErgoBlue's written reviews are positive against 0% of Density Altitude Calculators's.

## The numbers

| Metric | ErgoBlue | Density Altitude Calculators |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ergoblue/id1481779003/reviews)** | [4.8 (4 ratings)](https://appshunter.io/ios/app/density-altitude-calculators/id6677017745/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 1.7 GB | 27 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aeronautical Data Systems Inc.](https://appshunter.io/developer/552304929) | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) |

## What reviewers say

### ErgoBlue

[App page](https://appshunter.io/ios/app/ergoblue/id1481779003)

This aviation app provides pilots with real-time ship location data and an automated distress messaging system for emergencies over water. It enhances situational awareness, reduces pilot workload, and aids in faster rescue operations.

**Highlights:** Real-time AIS ship position data, Automated voice distress message, Distress text data message via DSC, Reduces pilot task saturation, Increases pilot situational awareness, Assists with ditching procedures, Instrument approach to ditching

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Special Flight Safety Offer | $7.99 | per month |
| Ergo Blue Weekly Subscription | $49.99 | per 7 days |
| ErgoBlue Monthly Subscription | $87.99 | per month |
| ErgoBlue Yearly Subscription | $999.99 | per year |


### Density Altitude Calculators

[App page](https://appshunter.io/ios/app/density-altitude-calculators/id6677017745)

Calculate pressure and density altitude using airfield elevation, local QNH, outside air temperature, and dew point. This tool provides essential aviation weather data.

**Highlights:** Pressure altitude calculation, Density altitude calculation, Uses airfield elevation, Incorporates local QNH, Considers outside air temperature, Includes dew point

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

**In-app purchases:** none


## Frequently asked questions

### Is ErgoBlue free?

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

### Is Density Altitude Calculators free?

Density Altitude Calculators costs $2.99, with no in-app purchases.

### Which has better reviews, ErgoBlue or Density Altitude Calculators?

ErgoBlue is rated higher. ErgoBlue averages 5.0 out of 5 from 1 ratings, while Density Altitude Calculators averages 4.8 from 4 ratings.

### Do ErgoBlue or Density Altitude Calculators have ads?

Neither ErgoBlue nor Density Altitude Calculators shows ads.

---

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