AircraftPower vs ACE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AircraftPower
This app calculates and displays the performance of various aircraft engines. It offers a graphical representation of engine performance charts and allows users to input various parameters to see real-time output. Users can choose between English and metric units for measurements.
- Reciprocating engine performance model
- Calculates sea level and altitude performance
- Graphical engine performance chart
- Manual construction method illustration
- Input manifold pressure, RPM, altitude, temperature
- English and metric unit options
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AircraftPower is an Aircraft Engine Performance App. It uses a standard reciprocating engine performance model to calculate and display the sea level and altitude performance of 74 normally-aspirated Continental® engines and 108 normally-aspirated Lycoming® engines. A graphic display shows the engine performance chart and illustrates the manual construction method for determining altitude performance that we learned in ground school (and promptly forgot). As the user changes the input values, using the sliders or the custom keypad, for manifold pressure (or % power), rpm, pressure altitude and outside air temperature, the power output and percent power (or manifold pressure required) are displayed, and dotted lines and colored dots in the graphic display follow the manual construction method. While the graphics aren't really necessary, they are instructive (and interesting) to watch. The user may choose english or metric units for altitude, altimeter setting, temperature, manifold pressure and power output (however, the graphic always uses english units), and may select default values for the inputs and the engine. The user can also choose to input the indicated altitude instead of the pressure altitude (the default), and choose to input the % rated power instead of the manifold pressure. If using the indicated altitude, an input window for the altimeter setting appears.
ACE
This application allows users to create and manage checklists for Garmin avionics. It specifically supports the ACE checklist file format, making it ideal for pilots using systems like the G3X Touch.
- Checklist editor
- ACE checklist file format support
- Garmin avionics integration
- G3X Touch compatibility
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A checklist editor for Garmin avionics that support the ACE checklist file format (such as the G3X Touch).
Verdict
AircraftPower and ACE both sit at 4.9 stars, but that hides the real split: 100% of AircraftPower's written reviews are positive against 80% of ACE's. AircraftPower also leads on ratings volume (18 vs 5) and iOS requirement (13.5 vs 17.0). On price, rating, 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.
On the App Store both sit at effectively the same score — 4.9 for AircraftPower against 5.0 for ACE. Both are backed by a comparable volume of ratings — 18 and 5 respectively. Written reviews are what separate them: 100% of AircraftPower's written reviews are positive against 80% of ACE's.
| Parameter | AircraftPower | ACE |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (18 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 80.0% of reviews |
| Number of ratings | 18 — better | 5 |
| Update frequency | Every 7 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad | iPad, Mac — better |
| Requires iOS | 13.5 — better | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | James Petty | Post River Software |
Customer experience
AircraftPower
ACE
In-app purchases
AircraftPower
No in-app purchases
ACE
No in-app purchases









