Comparison

MyCMC vs MyEngine

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MyCMC

Access ACMS and FHDB databases from the Honeywell Primus Apex Integrated Avionics Suite. This tool requires login to the Connected Flight Deck System.

Highlights
  • ACMS database retrieval
  • FHDB database retrieval
  • Honeywell Primus Apex integration
  • Connected Flight Deck System login
  • Avionics data access
Read full description

Honeywell's MyCMC app is a tool for retrieving ACMS and FHDB databases from the Honeywell Primus Apex Integrated Avionics Suite when logged into the Connected Flight Deck System.

About

MyEngine

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
Read full description

Overview Williams International - MyEngine - Information File Transfer This application facilitates the transfer of Engine Information (e-info) files from an Aircraft to Williams International. The MyEngine application has 2 Connection Modes, Aircraft and WI. In Aircraft Connection Mode the flight files on the Aircraft are acquired by the iPad. In WI Connection Mode, the e-info files are uploaded to Williams International. Acquiring Aircraft Files In order to acquire Aircraft flight files, change to Aircraft Connection Mode. Use the [ Make a Connection ], [ Connect to Aircraft ] or [ Connect to Internet ] button on the home page to access the iPad Settings (Wi-Fi) and select the appropriate Aircraft network. Once the Aircraft Wi-Fi setting is selected, return to the MyEngine home page and verify Aircraft availability via the [ Wi-Fi ] display. Aircraft file acquisition will begin automatically. Aircraft files can be re-acquired, or a cancelled acquisition can be restarted, by using the [ Retry Transfer ] button. Notifications will provide file acquisition progress or error messages. Transferring Files to Williams International After Aircraft flight files have been acquired, transfer to Williams International is available. Change to WI Connection Mode (via Internet) by using the [ Connect to Internet ] or [ Make a Connection ] button on the home page to access the iPad Settings (Wi-Fi) and select the appropriate Internet network. Once the Williams Connect (Internet) Wi-Fi setting is selected, return to the MyEngine home page and verify availability via the [ Wi-Fi ] display. File transfer to Williams International will begin automatically. Files can be re-sent, or a cancelled transfer can be restarted, by using the [ Retry Transfer ] button. Notifications will provide file transfer progress or error messages.

Screenshots

MyEngine4 screens

Verdict

The call

The clearest difference is update cadence: MyCMC at every 7 months against MyEngine's every 22 months. MyCMC also leads on iOS requirement (8.0 vs 11.0). MyEngine's advantage is device support (3 vs 1). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

MyCMC ships an update every 7 months, MyEngine every 22 months. The most recent releases landed on September 21, 2026 and September 14, 2026 respectively.

Scorecard3 real differences · 7 level
MyCMC versus MyEngine: the parameters behind the verdict, then further details
ParameterMyCMCMyEngine
PriceFreeFree
Rating—5.0 (3 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings—3 — better
Update frequencyEvery 7 months — betterEvery 22 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPhone, iPad, iPod — better
Requires iOS8.0 — better11.0
Further details — not scored
Size7 MB39 MB
Age rating4+4+
DeveloperHoneywell International, Inc.Williams International Co., LLC

Customer experience

MyCMC

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

MyEngine

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

MyCMC

No in-app purchases

None

MyEngine

No in-app purchases

Questions

Is MyCMC free?
MyCMC is free to download, with no in-app purchases.
Is MyEngine free?
MyEngine is free to download, with no in-app purchases.
Do MyCMC or MyEngine have ads?
Neither MyCMC nor MyEngine shows ads.
Which is updated more often, MyCMC or MyEngine?
MyCMC ships an update every 7 months, and MyEngine every 22 months. Most recently, MyCMC was updated on September 21, 2026 and MyEngine on September 14, 2026.

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