# AircraftPower — user reviews

> 12 indexed App Store user reviews of AircraftPower by James Petty, rated 4.94/5 from 17 ratings.

- Source: https://appshunter.io/ios/app/aircraftpower/id718023187/reviews
- App overview in markdown: https://appshunter.io/ios/app/aircraftpower/id718023187.md
- Rating breakdown: 5★ 16 · 4★ 1 · 3★ 0 · 2★ 0 · 1★ 0

## Newest reviews (1 of 12)

### 5/5 — Amazing App

*2013-12-19, version 1.0*

Simple app that does just what it says.
Allows you to painlessly compute percent power.
Funny, I just ferried a plane coast to coast last week and wondered why no one had done this.
...today, here it is.

One bug though.
Engine choice does not remain as default.
(iPad 2)

## Most critical reviews (10 lowest-rated)

### 4/5 — Thanks for the Cool APP

*2019-06-16, version 2.0*

Very Neat APP.  I did not see where the engines were being operated versus peak EGT?  I assume you were using 100 degrees ROP as best power setting?

### 5/5 — Fantastic

*2024-09-05, version 4.2*

Great work James. Thanks for the IO550 additions!

### 5/5 — C177RG

*2023-06-12*

Have used this app for 3 mths. Has been shown to match very closely the manufacturers performance chart expectations. Engine is always more reliably in its comfort zone by using the app than without. Would recommend it to at least try it.
C177RG flyer.

### 5/5 — Awesome

*2023-01-22, version 3.0*

This is perfect, great job excellent UI. I’d pay for it.

### 5/5 — Works Great

*2022-11-21, version 2.3*

I use it on most flights out of the traffic  pattern. If he included IAS, I would also get TAS without need of the second app.

### 5/5 — About time!

*2022-08-03, version 2.3*

Great app, it’s about time we had something like available for those of us with older EMS systems. 
One question:
Add a custom feature for engines that develop more power as a result of porting, and/or non-standard pistons?

Thank you!

### 5/5 — Great app!

*2022-03-30, version 2.2*

A fellow RV’er friend of mine showed me this app, which I’ve now downloaded. It’s well done and super helpful!

### 5/5 — Excellent piece application

*2020-07-16*

Absolutely wonderful way of reviewing the power settings and understand what is actually happening. Saves so much work having to look at the physical tables - Especially for home builds where no formal POH’s exist..

### 5/5 — Awesome: must to have!!!!

*2019-09-02, version 2.1*

I can't believe no one did that app before!! It's amazing, you thought about everything even the current altitude vs std press altitude: bravo!
Just missing one thing: no indication when above max continuous power (dotted line in the manual following MAP).
Thanks for the aviation community!

### 5/5 — Thank you

*2019-06-08, version 2.0*

Figuring out the Lycoming charts that you can’t read and  understand in the owners manual on determining horsepower based upon manifold pressure, RPM, non-standard temperature and pressure altitude. I was pulling my hair out and I said to myself we need an app for this and you created it! Thank you so much. Very well designed.

## Most praised reviews (1 highest-rated)

### 5/5 — Well Done App!

*2015-04-23, version 1.2*

James has done a great job of making a once tedious job of calculating engine altitude performance, very easy!  Simple to use and informative, good planning tool to save SA on your Lycoming predicted power.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*