Comparison

Maritime Knowledge vs Marine Survey Assistant

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

Head to head
About

Maritime Knowledge

This application offers comprehensive marine education resources, including structured study materials and video lectures from experienced professors. It aims to provide accessible, quality learning for marine students worldwide, saving them time and energy.

Highlights
  • Online study materials
  • Video lectures
  • Structured curriculum
  • Experienced professors
  • Accessible worldwide
  • Student-friendly interface
Features
Read full description

"Maritime Knowledge Application" is a result of complete efforts of research in the field of Marine education. The main aim of this application is provide quality education to Marine students. We have a well course comprising online study materials, Video lectures on our website as well as Mobile app. For using our Applications, Student's save their time and energy by providing well structured and simplified study materials and video lectures by well experienced professors. This will allow the students to access the quality education by anywhere in the world. However, Maritime Knowledge Application is a students friendly and also completely free application.

About

Marine Survey Assistant

This app offers a comprehensive suite of tools and information for marine professionals. It includes various calculators for draft, ballast, oil, and cargo, along with marine news, a port logbook, and video courses. Users can also manage documents and track contracts.

Highlights
  • Draft Survey Calculator
  • Ballast Calculator
  • Oil & Cargo Calculators
  • ETA & Slip Calculators
  • Unit Converter
  • Port Log Book
  • Marine News & Documents
Features
Read full description

***This is a Free Offline version of Marine Survey with some Paid features but a lot of Free content and calculators. If you want to use the Full version (all included), please download Marine Survey Pro - Marine News - My Documents - MARGRAM - Contract Tracker - Trusted Crewing Companies - Draft Survey Calculator (manual / auto) - Ballast Calculator (manual / auto) - Oil Calculator (manual / auto) - Cargo Trimming Calculator (manual / auto) - Stowage Plan Calculator (auto) - ETA Calculator - Slip Calculator - Main Engine Power Calculator - Unit Converter - Humidity Calculator - List Calculator - Interpolation Calculator - Squat & UKC Calculator - Changing Draft and GM Calculator - Port Log Book - IALA Buoyage System - Country Flags - Video Courses - Theory for any crew member Marine Calculators: - Draft Survey Calculator: Manual and automatic calculation of loaded / unloaded cargo. - Ballast Calculator: Easy auto / manual calculation quantity of ballast water on board. Just add Vessel - Ballast tanks - Tank Tables and calculate quantity of ballast in tanks in a seconds - Stowage Plan Calculator: Auto calculation of cargo by holds, using SF' of cargo as well as the necessary entries in the port for arrival and departure. - Slip Calculator: Calculator for engineers. Slip of the propeller in water, i.e. the difference between the actual speed of the ship and the one it would have if the propeller didn't rotate in water, but was screwed into a solid body - Main Engine Power Calculator: Calculation of Main Engine Power for Engineers - ETA Calculator: Quick calculation of the date and time of the ship's arrival, as well as calculation of speed you have to keep to arrive at a given time - Cargo Trimming Calculator: Easy auto / manual Trimming at the end of loading. Calculation quantity of cargo to be loaded in Cargo Holds at the end of loading and get an even keel or requested trim. - Unit Convetrer: Quickly conversion of units such as Stowage Factor, Volume, Length, Speed, Temperature - Humidity Calculator: Relative Humidity Calculation. - Oil Calculator: Easy and fast manual and auto calculation of Oil and Fuel on board. - List Calculator: Calculation of heel in degrees for navigators. - Interpolation Calculator: Liner and Bilinear Calculator - Squat & UKC Calculator: Calculation of Squat and Under Keel Clearance - Changing Draft and GM Calculator: Change in ship’s draft and GM when entering water with different density. - Theory and Useful content for any crew member. Crewing Companies: - Application Form sending - Brief Company information page - Vacancies for seamen Partners: - Video Cources for seafarers Marine News: - All important news for seamen - Always be aware of what is happening at sea Weather Condition: - Weather tracking at sea (material from open source PassageWeather) My Documents: Keep all your Marine Documents in one place - Unlimited Documents - Upload pdf and images - 3 month notification before expiry date Port Log Book: - Fast entries in Port - Entries for mooring / unmooring - Daily port entries Video Courses (Russian language): - Draft Survey - Program Draft Survey - Grain Stability Theory and Useful content: - Draft Survey - Grain Stability - Helicopter Operations - Fire Control and LSA - Medical First Aid, and more. Content will be constantly updated IALA Buoyage System: - IALA Buoyage System for Mariners - Pictures of buoys and rules - Location by regions A and B Country Flags: - Countries and their flags graphically We are constantly adding new features for your convenience.

Screenshots

Maritime Knowledge4 screens
Marine Survey Assistant4 screens

Verdict

The call

The clearest difference is review sentiment: Maritime Knowledge at 100% against Marine Survey Assistant's 50%. Maritime Knowledge also leads on in-app purchases (none vs 9) and ads (none vs shown). On price, update cadence, device support and iOS requirement 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. Marine Survey Assistant sells 9 one-off in-app purchases. Maritime Knowledge asks for nothing beyond the download.

UpkeepUpdate frequency

Maritime Knowledge ships an update monthly, Marine Survey Assistant every 4 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard4 real differences · 6 level
Maritime Knowledge versus Marine Survey Assistant: the parameters behind the verdict, then further details
ParameterMaritime KnowledgeMarine Survey Assistant
PriceFreeFree
Rating—3.0 (2 ratings) — better
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings—2 — better
Update frequencyMonthlyEvery 4 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size40 MB143 MB
Age rating4+4+
DeveloperMTECH COMMERCE AND BUSINESS SOLUTIONS PRIVATE LIMITEDStanislav Soroka

Customer experience

Maritime Knowledge

Written reviews18 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Marine Survey Assistant

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews4 reviews
Positive50.0%
Neutral25.0%
Negative25.0%

In-app purchases

None

Maritime Knowledge

No in-app purchases

9 purchases

Marine Survey Assistant

One-time9
  • Remove Ads$4.99
  • Squat & UKC Calculator$5.99
  • ME Power Calculator$6.99
Show 6 more
  • Draft & GM Calculator$7.99
  • Video Courses$9.99
  • Ballast Calculator$14.99
  • Сargo Trimming Calculator$14.99
  • Oil Calculator$14.99
  • Draft Survey Calculator$17.99

Questions

Is Maritime Knowledge free?
Maritime Knowledge is free to download, with no in-app purchases.
Is Marine Survey Assistant free?
Marine Survey Assistant is free to download, with in-app purchases available.
Do Maritime Knowledge or Marine Survey Assistant have ads?
Marine Survey Assistant shows ads; Maritime Knowledge does not.
Which is updated more often, Maritime Knowledge or Marine Survey Assistant?
Maritime Knowledge ships an update monthly, and Marine Survey Assistant every 4 weeks. Most recently, Maritime Knowledge was updated on November 3, 2026 and Marine Survey Assistant on November 4, 2026.

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