NS Vessel vs Maindeck
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NS Vessel
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Manage your fleet with confidence with the Nautical Systems® Vessel mobile app. The App enables crew mobility on board blue-water vessels, allowing efficiency while performing daily tasks, inspections and checklists. Compliant with OSV – OVID (OVIQ) + IMCA DSV, DIVING, DP vessels- IMCA ISM, STCW TMSA, OCIMF SIRE, BIQ Subchapter M Intuitive Functionality: • Scales with organization • Easy data entry onboard • Works in offline mode; syncs to onboard server • Crew Sign-on and Sign-off Day-to-Day Operations Ready: • Supports work order completions, audit inspections, checklist-based inspections, on-board meetings and drills, audits, sign-on and sign-off crew and document delivery • Easy-to-view maintenance and compliance tasks o Planned and unplanned work orders, audits, inspections, meetings, drills, running hours entry task, inventory count task • HSQE with questionnaire and checklist support • Identify critical equipment history for inspections and audits • Reporting on hazardous conditions, inspections and equipment failures • Update key operational information such as equipment running hours and spares inventory • Machinery failure reporting • Create new work orders, inspections, meetings, drill and safety observations • Capture visitor log information • Critical equipment list and its job history • Manage visitors We are committed to providing the most reliable customer service and product improvements based on your feedback. Disclosure NS Vessel Mobile app functionality is available through an ABS Nautical Systems Enterprise subscription software license. Nautical Systems Enterprise puts the client in control of General Data Protection Regulation (GDPR) compliance by showing the client the location of potentially private data and allowing case by case determination for data handling. The software will contain functionality that enables clients to carry out their obligations under the GDPR, such as searching for personal data in comments, documents and attachments, utility for anonymization of crew records that contain personal data, and compiling reports in response to individuals’ requests for their personal data.
Maindeck
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Maindeck is the only modern software for dry-docking projects and other maintenance and repair projects. Here is what you can do with this app: While planning the project: - View work orders. - Edit work orders. - Add new work orders to the project. While executing the project: - View work orders, including a timeline of all updates provided. - Add progress updates to your work order. - See who's responsible for what. Offline functionality: This app works perfectly offline. It comes with a built in database where content is saved while offline, and it will automatically synchronise once an internet connection is detected. This means you will be able to use all functionality while offline without having to worry. While offline, you can view all the work that is pending upload from your profile page. Manage access Through the web app, you can invite new users and manage which work orders they will be able to view and provide updates on. Users will only see the work orders for which you have given them access.
Screenshots
Verdict
NS Vessel and Maindeck are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
NS Vessel ships an update every 2 months, Maindeck every 5 weeks. The most recent releases landed on September 15, 2026 and September 17, 2026 respectively.
| Parameter | NS Vessel | Maindeck |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 88 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | ABS Nautical System LLC | Unisea AS |
In-app purchases
NS Vessel
No in-app purchases
Maindeck
No in-app purchases









