TruAirspeed vs uAvionix Echo Installer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TruAirspeed
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.
- 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
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TruAirspeed is a True Airspeed Calculator for the iPhone and iPad. It's a bit different from other true airspeed calculators, in which the pressure altitude is an input. This requires resetting the altimeter to the standard sea level pressure of 29.92"Hg to read the pressure altitude. With TruAirspeed, you input the indicated altitude and the Kollsman window's pressure setting — the app then calculates the pressure altitude, density altitude, true airspeed and mach number for you. The calculations involved take full account of compressibility effects, but not shock waves, so it's limited to subsonic, non-transonic flight only. You have a choice of units for inputs and results, and you may choose either a calculator-style keypad (top row: 7-8-9) or a telephone-style keypad (top row: 1-2-3). You may also set a correction factor for your bird's airspeed indicator/pitot-static system, if you know it (mine is 0.95).
uAvionix Echo Installer
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.
- Device monitoring
- Hardware installation
- Device configuration
- Supports echoUAT
- Supports Vektor
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Owners of the uAvionix Echo line of devices can use this free application to monitor, install, and configure their hardware. Supported device(s) include: echoUAT Vektor To configure your uAvionix skyBeacon, please download skyBeacon Installer from the App Store.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | TruAirspeed | uAvionix Echo Installer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (8 ratings) | 4.1 (8 ratings) — better |
| Positive reviews | 71.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 8 | 8 |
| Update frequency | Every 24 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | James Petty | uAvionix Corporation |
Customer experience
TruAirspeed
uAvionix Echo Installer
In-app purchases
TruAirspeed
No in-app purchases
uAvionix Echo Installer
No in-app purchases
Questions
Is TruAirspeed free?
Is uAvionix Echo Installer free?
Which has better reviews, TruAirspeed or uAvionix Echo Installer?
Do TruAirspeed or uAvionix Echo Installer have ads?
Which is updated more often, TruAirspeed or uAvionix Echo Installer?
Other comparisons
