Mercury Diagnostic App vs Power Queen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mercury Diagnostic App
This app allows Mercury dealer technicians to perform basic diagnostics on SmartCraft® engines. It provides live engine data, fault information, runtime history, and custom data lists. Full functionality requires a license key and a VesselView Mobile module.
- View live SmartCraft® engine data
- Create custom data lists
- Obtain active faults
- View runtime history
- Enter maintenance records
- Wireless communication via Bluetooth
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Mercury Marine’s Diagnostic App (MDA) enables Mercury dealer technicians to easily switch between VesselView Mobile rigged boats (or a module carried with them) throughout the day to do basic diagnostics on SmartCraft® engines with the phone in their pockets. MDA provides the ability to create custom data lists to view live engine data, obtain active faults, view runtime history, create reports, and more. The full functionality of the app is enabled with a license key obtained from Mercury Marine and works in conjunction with the Bluetooth Low Energy VesselView Mobile module. When the app is open and connected to your vessel it requires a continuous connection and therefore may impact the battery life of your device. Features: • View live SmartCraft® engine data and create custom data lists with: RPM, Battery Voltage, Engine Temperature, Engine Hours, Oil Temperature, Oil Pressure, Coolant Temperature, Sea Temperature and more! • View active fault and corresponding descriptive fault information • View engine hours and runtime history • Enter Maintenance records • Communicate wirelessly to SmartCraft® engines through a Bluetooth Low Energy connection and a connected VesselView Mobile module • Allows for normal phone operation – call, text, streaming music, search the web, etc. while connected to a Mercury Marine SmartCraft® engine ************ IMPORTANT INFORMATION ************************* • MDA is limited to use by Mercury Marine Dealers. A software license key is required to use this app. • MDA is designed to work with the VesselView Mobile module that may already be rigged on a boat, or may be purchased through your dealership or through a link inside the app. A firmware update to the VesselView Mobile module may be required to use MDA. *Requires version 1.0.3 firmware or later. • The VesselView Mobile module works with SmartCraft® capable engines built since 2003 (40HP and up). One to four engines can be viewed simultaneously. • The VesselView Mobile module simply connects to a SmartCraft® connector located either at the helm or on the engine. • Continued use of GPS running in the background can dramatically decrease battery life.
Power Queen
Monitor and manage your energy storage battery devices in real-time via Bluetooth. Achieve a smart lifestyle with reliable energy management solutions, making your life more convenient and efficient from anywhere.
- Real-time battery monitoring
- Bluetooth device connection
- Energy storage management
- Smart lifestyle integration
- Remote energy solutions
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Power Queen, your perfect companion for smart living! Through Bluetooth connection, we provide real-time monitoring and management for your energy storage battery devices, helping you achieve a smart lifestyle. No matter where you are, Power Queen can provide you with reliable energy management solutions, making your life more convenient and efficient.
Screenshots
Verdict
The clearest difference is update cadence: Power Queen at every 3 weeks against Mercury Diagnostic App's every 11 months. Power Queen also leads on ratings volume (43 vs 1). Mercury Diagnostic App's advantage is rating (3.0 vs 2.7) and iOS requirement (10.0 vs 13.0). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Mercury Diagnostic App holds the better App Store score, 3.0 against 2.7. That said, the two scores are not equally well evidenced: Power Queen has 43 ratings behind it against 1, so its average is the more settled of the two.
Mercury Diagnostic App ships an update every 11 months, Power Queen every 3 weeks. The most recent releases landed on November 5, 2026 and October 30, 2026 respectively.
| Parameter | Mercury Diagnostic App | Power Queen |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) — better | 2.7 (43 ratings) |
| Positive reviews | — | 24.5% of reviews |
| Number of ratings | 1 | 43 — better |
| Update frequency | Every 11 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 73 MB | 47 MB |
| Age rating | 4+ | 17+ |
| Developer | Mercury Marine LLC | Shenzhen Lizu Shidai Technology |
Customer experience
Mercury Diagnostic App
Power Queen
In-app purchases
Mercury Diagnostic App
No in-app purchases
Power Queen
No in-app purchases
Questions
Is Mercury Diagnostic App free?
Is Power Queen free?
Which has better reviews, Mercury Diagnostic App or Power Queen?
Do Mercury Diagnostic App or Power Queen have ads?
Which is updated more often, Mercury Diagnostic App or Power Queen?
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