# MyEngine vs Sky Duty

The clearest difference is monetization model: MyEngine at free against Sky Duty's subscription. MyEngine also leads on iOS requirement (11.0 vs 26.0). Sky Duty's advantage is update cadence (every 9 days vs every 22 months). On price, rating, ratings volume and ads there is nothing between them.

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 — 5.0 for MyEngine against 5.0 for Sky Duty. Both are backed by a comparable volume of ratings — 3 and 4 respectively.

MyEngine ships an update every 22 months, Sky Duty every 9 days. The most recent releases landed on October 2, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | MyEngine | Sky Duty |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/myengine/id1024732816/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/sky-duty/id6759208733/reviews) |
| Number of ratings | 3 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 9 days** |
| Monetization | **Free** | Subscription |
| Size | 39 MB | 51 MB |
| Requires iOS | **11.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Williams International Co., LLC](https://appshunter.io/developer/1024732815) | [Sky Duty LLC](https://appshunter.io/developer/1877041171) |

## What reviewers say

### MyEngine

[App page](https://appshunter.io/ios/app/myengine/id1024732816)

This app facilitates the transfer of engine information files from an aircraft to a specific company. It offers two connection modes: one to acquire flight files from the aircraft and another to upload these files to the company's servers.

**Highlights:** Aircraft file acquisition, Transfer to Williams International, Two connection modes (Aircraft & WI), Automatic file transfer, Retry transfer functionality, Progress notifications

**Features:** macOS Compatibility

**In-app purchases:** none


### Sky Duty

[App page](https://appshunter.io/ios/app/sky-duty/id6759208733)

This comprehensive flight operations app streamlines scheduling, logging, maintenance, and expense tracking for aviation teams. It offers visual fleet management, digital pilot logbooks, and crew coordination tools, all accessible offline and designed for multi-user collaboration.

**Highlights:** Visual fleet scheduling with Gantt-style timeline, Digital pilot logbook with template-driven entry, Automated maintenance tracking for inspections and compliance, Expense management with receipt scanning, Invoice creation and management, Crew coordination with role-based permissions, Live aviation weather integration, Offline functionality

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is MyEngine free?

MyEngine is free to download, with no in-app purchases.

### Is Sky Duty free?

Sky Duty is free to download, with no in-app purchases.

### Which has better reviews, MyEngine or Sky Duty?

MyEngine and Sky Duty are both rated 5.0 out of 5 on the App Store, from 3 and 4 ratings respectively.

### Do MyEngine or Sky Duty have ads?

Neither MyEngine nor Sky Duty shows ads.

### Which is updated more often, MyEngine or Sky Duty?

MyEngine ships an update every 22 months, and Sky Duty every 9 days. Most recently, MyEngine was updated on October 2, 2026 and Sky Duty on October 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*