Comparison

Adel Mostafa Software 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

Adel Mostafa Software

Features
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Adel Mostafa app is a must have application for my sons and fellow naval officers and any other person interested in celestial navigation as a science to benefit from to help them to calculate the time of occurrence of any natural phenomenon for a sailing ship Therefore, the navigator resorts to applying the method of successive approximation. It features Rhumb Line (Lat. & Long.), Rhumb Line (T.Co. & Dist.), Compass Error (Time Method), Compass Error (Amplitude Method), Star Chart, Meridian Passage, Sun Sight, Sun Run Sun, Star Sight, Universal Method, Egyptian Method, Unknown Star Identification, Equation of Time; Coordinates of the Sun & Aries, Prayer Time. The results are within 10-15 seconds which is accurate enough for sea.

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
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***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

Adel Mostafa Software4 screens
Marine Survey Assistant4 screens

Verdict

The call

The clearest difference is in-app purchases: Adel Mostafa Software at none against Marine Survey Assistant's 9. Adel Mostafa Software also leads on ads (none vs shown) and iOS requirement (11.0 vs 13.0). On price, update cadence and device support 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. Adel Mostafa Software asks for nothing beyond the download.

UpkeepUpdate frequency

Adel Mostafa Software ships an update every 2 weeks, Marine Survey Assistant every 4 weeks. The most recent releases landed on October 30, 2026 and October 16, 2026 respectively.

Scorecard3 real differences · 7 level
Adel Mostafa Software versus Marine Survey Assistant: the parameters behind the verdict, then further details
ParameterAdel Mostafa SoftwareMarine Survey Assistant
PriceFreeFree
Rating—3.0 (2 ratings) — better
Positive reviews—50.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 weeks — betterEvery 4 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS11.0 — better13.0
Further details — not scored
Size46 MB143 MB
Age rating4+4+
DeveloperOlymp Soft FZEStanislav Soroka

In-app purchases

None

Adel Mostafa Software

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 Adel Mostafa Software free?
Adel Mostafa Software 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 Adel Mostafa Software or Marine Survey Assistant have ads?
Marine Survey Assistant shows ads; Adel Mostafa Software does not.
Which is updated more often, Adel Mostafa Software or Marine Survey Assistant?
Adel Mostafa Software ships an update every 2 weeks, and Marine Survey Assistant every 4 weeks. Most recently, Adel Mostafa Software was updated on October 30, 2026 and Marine Survey Assistant on October 16, 2026.

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