---
title: "TruAirspeed - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "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 "
---

# TruAirspeed — United States

![TruAirspeed App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/99/6b/20/996b20ec-3d96-c5f4-7c6f-0aaa78e74a4b/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png)

**Developer:** [James Petty](https://apptail.io/developer/james-petty-qcL)
**Category:** Utilities
**Rating:** 4.1/5 (8 ratings)
**Price:** Free
**Bundle ID:** PHI.Ae.TAS
**Store:** Apple App Store
**Country:** United States
**Version:** 2.1 (released 2025-07-08)
**Original Release:** 2014-04-14
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id855269892)
**AppTail Page:** [https://apptail.io/app/truairspeed-APe/united-states](https://apptail.io/app/truairspeed-APe/united-states)

## TruAirspeed Description
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).

## TruAirspeed Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/4f/36/5c/4f365c90-b2c3-310e-e12b-5f74eca19830/d37fab79-2305-4c8e-b12a-c5efe047e1ba_iPhone_15_U002a_-_Main_U002c_port.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/ac/a3/cb/aca3cb7a-0628-581e-f923-3350e8c9b195/8583cf02-cafd-4a38-87d7-c9f26e4f3778_iPhone_15_U002a_-_Main_U002c_land.png/2688x1242.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/fe/0f/3f/fe0f3f4b-82d7-154d-1fd0-61880ea41e3a/c6ccfdc5-0c5e-48d1-a52c-18fe94e8e32a_iPhone_15_U002a_-_Info_Index_U002c_land.png/2688x1242.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/e0/f2/a8/e0f2a8c6-21e7-ffd7-0cc5-22045a59b997/f7531cd5-c180-4669-93c2-5c89e954e0b3_iPhone_15_U002a_-_Info_U002c_land.png/2688x1242.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/d2/0c/44/d20c4403-996c-8f76-965a-c76ba42eacf5/f0aa03ab-02d6-4719-90fc-ff0a77b0903e_iPhone_15_U002a_-_Prefs_U002c_land.png/2688x1242.png)

## TruAirspeed Rating Breakdown in United States
- 5 stars: 5 (63%)
- 4 stars: 1 (13%)
- 3 stars: 1 (13%)
- 2 stars: 0 (0%)
- 1 stars: 1 (13%)

## TruAirspeed Reviews in United States

### ****- "How do u change to mph"
I can’t find how to change knots to miles per hour which my airspeed indicator is calibrated in?
-- tom3holer, 2024-09-05

### ***** "Works as stated. Generous contributor to the flight testing and experimental community."
Another useful offering by Mr. Petty. Thank you sir. I’m enjoying tinkering with Benchmark too. As for the one user saying there is no way to change units; there is. Tap the little “i” in the corner and drill down. As for the other claiming the app is inaccurate, if you mix up C and F, you get a big error (10 knots on a sample I just did).
-- mesae, 2023-05-13

### *---- "Incorrect compared to other calculators"
Off by between 5-10 kts.  Not reliable
-- jack22378888, 2022-01-30

### ***-- "No way to choose between F and C?"
Is there really no way to change between Celsius and Fahrenheit? That makes it so you need another app to convert temperature. Am I missing something? This seems like a major oversight.
-- hish747, 2021-08-22

### ***** "Excellent"
A great tool - thanks :-)
-- General Mutley, 2016-06-15

[View all TruAirspeed reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)




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## TruAirspeed Available In
- [United States](https://apptail.io/app/truairspeed-APe/united-states)
- [Canada](https://apptail.io/app/truairspeed-APe/canada)
- [China](https://apptail.io/app/truairspeed-APe/china)
- [Belgium](https://apptail.io/app/truairspeed-APe/belgium)
- [Bahrain](https://apptail.io/app/truairspeed-APe/bahrain)
- [Brazil](https://apptail.io/app/truairspeed-APe/brazil)
- [Switzerland](https://apptail.io/app/truairspeed-APe/switzerland)
- [Chile](https://apptail.io/app/truairspeed-APe/chile)
- [Colombia](https://apptail.io/app/truairspeed-APe/colombia)
- [Czechia](https://apptail.io/app/truairspeed-APe/czechia)
- [Germany](https://apptail.io/app/truairspeed-APe/germany)
- [Denmark](https://apptail.io/app/truairspeed-APe/denmark)
- [Dominican Republic](https://apptail.io/app/truairspeed-APe/dominican-republic)
- [Algeria](https://apptail.io/app/truairspeed-APe/algeria)
- [Ecuador](https://apptail.io/app/truairspeed-APe/ecuador)
- [Egypt](https://apptail.io/app/truairspeed-APe/egypt)
- [Spain](https://apptail.io/app/truairspeed-APe/spain)
- [Finland](https://apptail.io/app/truairspeed-APe/finland)
- [France](https://apptail.io/app/truairspeed-APe/france)
- [United Kingdom](https://apptail.io/app/truairspeed-APe/united-kingdom)
- [Greece](https://apptail.io/app/truairspeed-APe/greece)
- [Hong Kong SAR China](https://apptail.io/app/truairspeed-APe/hong-kong)
- [Hungary](https://apptail.io/app/truairspeed-APe/hungary)
- [Indonesia](https://apptail.io/app/truairspeed-APe/indonesia)
- [Ireland](https://apptail.io/app/truairspeed-APe/ireland)
- [Israel](https://apptail.io/app/truairspeed-APe/israel)
- [India](https://apptail.io/app/truairspeed-APe/india)
- [Italy](https://apptail.io/app/truairspeed-APe/italy)
- [Japan](https://apptail.io/app/truairspeed-APe/japan)
- [South Korea](https://apptail.io/app/truairspeed-APe/south-korea)
- [Kuwait](https://apptail.io/app/truairspeed-APe/kuwait)
- [Kazakhstan](https://apptail.io/app/truairspeed-APe/kazakhstan)
- [Lebanon](https://apptail.io/app/truairspeed-APe/lebanon)
- [Lithuania](https://apptail.io/app/truairspeed-APe/lithuania)
- [Mexico](https://apptail.io/app/truairspeed-APe/mexico)
- [Malaysia](https://apptail.io/app/truairspeed-APe/malaysia)
- [Nigeria](https://apptail.io/app/truairspeed-APe/nigeria)
- [Netherlands](https://apptail.io/app/truairspeed-APe/netherlands)
- [Norway](https://apptail.io/app/truairspeed-APe/norway)
- [New Zealand](https://apptail.io/app/truairspeed-APe/new-zealand)
- [Peru](https://apptail.io/app/truairspeed-APe/peru)
- [Philippines](https://apptail.io/app/truairspeed-APe/philippines)
- [Pakistan](https://apptail.io/app/truairspeed-APe/pakistan)
- [Poland](https://apptail.io/app/truairspeed-APe/poland)
- [Portugal](https://apptail.io/app/truairspeed-APe/portugal)
- [Romania](https://apptail.io/app/truairspeed-APe/romania)
- [Russia](https://apptail.io/app/truairspeed-APe/russia)
- [Saudi Arabia](https://apptail.io/app/truairspeed-APe/saudi-arabia)
- [Sweden](https://apptail.io/app/truairspeed-APe/sweden)
- [Singapore](https://apptail.io/app/truairspeed-APe/singapore)
- [Slovakia](https://apptail.io/app/truairspeed-APe/slovakia)
- [Thailand](https://apptail.io/app/truairspeed-APe/thailand)
- [Türkiye](https://apptail.io/app/truairspeed-APe/turkey)
- [Taiwan](https://apptail.io/app/truairspeed-APe/taiwan)
- [Ukraine](https://apptail.io/app/truairspeed-APe/ukraine)
- [Vietnam](https://apptail.io/app/truairspeed-APe/vietnam)
- [United Arab Emirates](https://apptail.io/app/truairspeed-APe/united-arab-emirates)
- [South Africa](https://apptail.io/app/truairspeed-APe/south-africa)
- [Argentina](https://apptail.io/app/truairspeed-APe/argentina)
- [Australia](https://apptail.io/app/truairspeed-APe/australia)
- [Azerbaijan](https://apptail.io/app/truairspeed-APe/azerbaijan)

---

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