TruAirspeed vs WindsAloftPro
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).
WindsAloftPro
This app calculates winds aloft for U.S. locations, providing data from 5000 to 39000 feet. It can also display crosswinds along your route and allows manual adjustment of climb and descent biases for various aircraft.
- Winds aloft calculation
- Crosswind display
- Climb/descent bias modification
- U.S. location support
- Altitude range 5000-39000 ft
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Calculates winds aloft for U.S. locations from 5000 feet to 39000 feet. Crosswinds can also be displayed for winds along your route of travel. Climb and descent biases can be manually modified for different aircraft performance numbers.
Screenshots
Verdict
The clearest difference is rating: TruAirspeed at 4.1 against WindsAloftPro's 3.0. TruAirspeed also leads on review sentiment (71% vs 33%). WindsAloftPro's advantage is update cadence (every 6 months vs every 24 months). On price, ratings volume, ads and in-app purchases 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.
TruAirspeed holds the better App Store score, 4.1 against 3.0. Both are backed by a comparable volume of ratings — 8 and 3 respectively. Written reviews point the same way: 71% of TruAirspeed's written reviews are positive against 33% of WindsAloftPro's.
TruAirspeed ships an update every 24 months, WindsAloftPro every 6 months. The most recent releases landed on June 2, 2026 and June 5, 2026 respectively.
| Parameter | TruAirspeed | WindsAloftPro |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (8 ratings) — better | 3.0 (3 ratings) |
| Positive reviews | 71.4% of reviews — better | 33.3% of reviews |
| Number of ratings | 8 — better | 3 |
| Update frequency | Every 24 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.2 — better |
| Further details — not scored | ||
| Size | 8 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | James Petty | Tremont Air, LLC |
Customer experience
TruAirspeed
WindsAloftPro
In-app purchases
TruAirspeed
No in-app purchases
WindsAloftPro
No in-app purchases
