# TruAirspeed vs uAvionix Echo Installer

The clearest difference is update cadence: uAvionix Echo Installer at monthly against TruAirspeed's every 24 months. uAvionix Echo Installer also leads on review sentiment (100% vs 71%) and iOS requirement (11.0 vs 15.6). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.1 for TruAirspeed against 4.1 for uAvionix Echo Installer. Both are backed by a comparable volume of ratings — 8 and 8 respectively. Written reviews are what separate them: 71% of TruAirspeed's written reviews are positive against 100% of uAvionix Echo Installer's.

TruAirspeed ships an update every 24 months, uAvionix Echo Installer monthly. The most recent releases landed on October 2, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | TruAirspeed | uAvionix Echo Installer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (8 ratings)](https://appshunter.io/ios/app/truairspeed/id855269892/reviews) | **[4.1 (8 ratings)](https://appshunter.io/ios/app/uavionix-echo-installer/id1134855340/reviews)** |
| Number of ratings | 8 | 8 |
| Positive reviews | 71.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Monthly** |
| Monetization | Free | Free |
| Size | 8 MB | 40 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [James Petty](https://appshunter.io/developer/603661046) | [uAvionix Corporation](https://appshunter.io/developer/1127526871) |

## What reviewers say

### TruAirspeed

[App page](https://appshunter.io/ios/app/truairspeed/id855269892)

This utility calculates true airspeed, pressure altitude, density altitude, and Mach number. It accounts for compressibility effects and offers unit choices and keypad styles. Users can also input a correction factor for their airspeed indicator.

**Highlights:** True airspeed calculation, Pressure and density altitude calculation, Mach number calculation, Compressibility effects accounted for, Choice of input/result units, Calculator or telephone keypad options, Airspeed indicator correction factor

**Features:** macOS Compatibility

**In-app purchases:** none


### uAvionix Echo Installer

[App page](https://appshunter.io/ios/app/uavionix-echo-installer/id1134855340)

This free utility allows owners of specific uAvionix Echo devices to monitor, install, and configure their hardware. It supports devices like the echoUAT and Vektor. For skyBeacon configuration, a separate installer is required.

**Highlights:** Device monitoring, Hardware installation, Device configuration, Supports echoUAT, Supports Vektor

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TruAirspeed free?

TruAirspeed is free to download, with no in-app purchases.

### Is uAvionix Echo Installer free?

uAvionix Echo Installer is free to download, with no in-app purchases.

### Which has better reviews, TruAirspeed or uAvionix Echo Installer?

uAvionix Echo Installer is rated higher. TruAirspeed averages 4.1 out of 5 from 8 ratings, while uAvionix Echo Installer averages 4.1 from 8 ratings.

### Do TruAirspeed or uAvionix Echo Installer have ads?

Neither TruAirspeed nor uAvionix Echo Installer shows ads.

### Which is updated more often, TruAirspeed or uAvionix Echo Installer?

TruAirspeed ships an update every 24 months, and uAvionix Echo Installer monthly. Most recently, TruAirspeed was updated on October 2, 2026 and uAvionix Echo Installer on October 3, 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.*