# Mercury Diagnostic App > Marine engine diagnostics app for licensed Mercury dealers with a VesselView module. (iPhone/iPad app by Mercury Marine LLC.) - Source: https://appshunter.io/ios/app/mercury-diagnostic-app/id1491041580 (this page in markdown: same URL + `.md`) - Developer: [Mercury Marine LLC](https://appshunter.io/developer/1777822540) - Category: Lifestyle - Price: Free - Rating: 3.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 10.0 · 73 MB - Released: 2021-01-25 - Data updated: 2026-08-14 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/mercury-diagnostic-app/id1491041580/reviews.md ## What is Mercury Diagnostic App? 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. ## Key features - View live SmartCraft® engine data - Create custom data lists - Obtain active faults - View runtime history - Enter maintenance records - Wireless communication via Bluetooth ## Frequently asked questions about Mercury Diagnostic App ### What is Mercury Diagnostic App used for? Mercury Diagnostic App (MDA) is used by licensed Mercury dealer technicians to perform basic diagnostics on SmartCraft® engines. It allows viewing live engine data, active faults, runtime history, and entering maintenance records. ### Who can use the Mercury Diagnostic App? The Mercury Diagnostic App is limited to use by Mercury Marine Dealers. A software license key is required to unlock its full functionality. ### What hardware is needed for Mercury Diagnostic App? To use the Mercury Diagnostic App, you need the VesselView Mobile module, which connects wirelessly to SmartCraft® capable engines built since 2003. A firmware update to version 1.0.3 or later may be required for the module. ### Does Mercury Diagnostic App have ads? No, the Mercury Diagnostic App does not contain advertisements. ### How often is Mercury Diagnostic App updated? The Mercury Diagnostic App was last updated on April 24, 2025, with version 1.0.11. This indicates a relatively frequent update schedule. ### What devices support Mercury Diagnostic App? Mercury Diagnostic App is supported on iPhones, iPads, and iPods. It is designed for iOS devices. ### Can I use my phone normally while Mercury Diagnostic App is connected? Yes, the app allows for normal phone operations such as calling, texting, streaming music, and searching the web while connected to a Mercury Marine SmartCraft® engine. ### What is the age rating for Mercury Diagnostic App? Mercury Diagnostic App has an age rating of 4+, making it suitable for a wide range of users. ## Version history (last 5 releases) ### 1.0.11 — 2025-04-24 • Bug fixes and enhancements. ### 1.0.10 — 2023-11-27 • Bug fixes and enhancements. ### 1.0.9 — 2023-07-20 • Bug fixes and enhancements. ### 1.0.8 — 2022-05-20 • Minor bug fixes and enhancements. ### 1.0.7 — 2021-06-15 • Minor bug fixes and enhancements. ## Apps similar to Mercury Diagnostic App | App | Rating | Price | Category | | --- | --- | --- | --- | | [Ramp Assist: Smart Boating](https://appshunter.io/ios/app/ramp-assist-smart-boating/id1640103295) | 3.7 (13) | Free | Lifestyle | | [VersiControl](https://appshunter.io/ios/app/versicontrol/id1169518047) | 3.4 (15) | Free | Lifestyle | | [MarineMax](https://appshunter.io/ios/app/marinemax/id1475146592) | 3.5 (22) | Free | Lifestyle | | [MyWhaler](https://appshunter.io/ios/app/mywhaler/id1571852328) | 4.6 (87) | Free | Lifestyle | | [Sea Ray+](https://appshunter.io/ios/app/sea-ray-plus/id1571852796) | 4.7 (88) | Free | Lifestyle | | [CZone 2](https://appshunter.io/ios/app/czone-2/id1318932440) | 3.0 (5) | Free | Lifestyle | ## More apps by Mercury Marine LLC - [VesselView Mobile](https://appshunter.io/ios/app/vesselview-mobile/id1167532720) - [SpeedLink Crate](https://appshunter.io/ios/app/speedlink-crate/id1432119729) - [1st-Mate](https://appshunter.io/ios/app/1st-mate/id1446444330) - [SmartCraft Manager](https://appshunter.io/ios/app/smartcraft-manager/id1544487941) - [SpeedLink Competition](https://appshunter.io/ios/app/speedlink-competition/id1585408058) All apps by Mercury Marine LLC: https://appshunter.io/developer/1777822540 ## Related topics [mercury diagnostic app](https://appshunter.io/ios/topics/mercury-diagnostic-app) · [suzuki sdsm](https://appshunter.io/ios/topics/suzuki-sdsm) · [mercury vessel view mobile](https://appshunter.io/ios/topics/mercury-vessel-view-mobile) · [mercury smartcraft](https://appshunter.io/ios/topics/mercury-smartcraft) · [mercury outboard](https://appshunter.io/ios/topics/mercury-outboard) · [vessel view](https://appshunter.io/ios/topics/vessel-view) · [mercury marine](https://appshunter.io/ios/topics/mercury-marine) · [diagnostic app](https://appshunter.io/ios/topics/diagnostic-app) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-14.*