MyCMC vs DCTU
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MyCMC
Access ACMS and FHDB databases from the Honeywell Primus Apex Integrated Avionics Suite. This tool requires login to the Connected Flight Deck System.
- ACMS database retrieval
- FHDB database retrieval
- Honeywell Primus Apex integration
- Connected Flight Deck System login
- Avionics data access
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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.
DCTU
This application facilitates communication with specific engine hardware for maintenance tasks. It allows users to view and modify engine parameters, retrieve diagnostic data, and manage engine module information. The tool supports real-time data collection and offline data entry.
- View/Change EEC and DCTU parameters
- Retrieve Events, Exceedances & Faults (EEF)
- Monitor DCTU health status
- Perform live data diagnostics
- Scan barcodes for module changes
- Generate offline LRU/Engine Module data files
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The Pratt and Whitney Digital Engine Services (DES) team developed the Data Collection and Transmission Unit (DCTU) application to communicate with the DCTU hardware on the PT6 E-Series™ engine using wireless connection to perform maintenance actions such as: – View/Change electronic engine control (EEC) and DCTU parameters – Retrieve Events, Exceedances & Faults (EEF) – Retrieve EEC diagnostics data via DCTU – Monitor health status on DCTU – Perform live data diagnostics on DCTU and EEC – Perform test transmission from DCTU to the ground station – Change engine modules by barcode scanning (or) through Manual entry – Change Line Replacement Units (LRUs) by barcode scanning (or) through Manual entry – Supports to do a BOV(Bleed of Valve) closing point check along with the Bluetooth pressure transducer – Allows user to generate locally stored file to enter data related to LRUs and Engine Modules while not connected to DCTU The DCTU hardware provides the capability for the operators to collect data in real-time, record the data to non-volatile memory, make connections to ground support equipment, either wired or wirelessly, and offload data to the ground support equipment.
Screenshots
Verdict
The clearest difference is device support: DCTU at 3 against MyCMC's 1. MyCMC's advantage is iOS requirement (8.0 vs 12.4). On price, update cadence, 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.
MyCMC ships an update every 7 months, DCTU every 5 months. The most recent releases landed on September 21, 2026 and September 29, 2026 respectively.
| Parameter | MyCMC | DCTU |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 7 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 12.4 |
| Further details — not scored | ||
| Size | 7 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Honeywell International, Inc. | Pratt & Whitney Canada Cie |
Customer experience
MyCMC
DCTU
In-app purchases
MyCMC
No in-app purchases
DCTU
No in-app purchases
