Comparison

Oil Tanker vs Petroleum VCF Basic

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

Head to head
About

Oil Tanker

Features
Read full description

Oil Tanker Operational Deck - CES test. CES Tests Seagull QUESTIONS & CORRECT ANSWERS. Updated practice tests. Seagull CES Crew Evaluation Test. Crew Evaluation System test online for seamans about Deck department, Operational level, Oil Tanker. This application will help you prepare and pass the CES test on the topic “Deck Operational Oil Tanker”. Such practice will help you as a marine professional to improve your knowledge through online learning and assessment practice. CES based on practical information and experience of maritime specialists. - Crowd and Crisis Management; - Integrated Navigation System (INS); - Ballast water management; - Handling and Stowage; - Vessel operation management and safety; - Marine engineering; - Maintenance and repair, etc. Application features: • “Preparation” mode • Exam mode • “Marathon” mode • Search questions Advantages: • The application does not require an Internet connection; • Tests are always “Available”. • Many modes of working with tests.

About

Petroleum VCF Basic

Calculate volume and density changes for various petroleum products due to temperature and pressure variations. Supports crude oil, refined products, and specialized oils. Requires minimum density and temperature data, with optional volume input.

Highlights
  • Volume and density change calculations
  • Supports crude oil, refined products, and lube oils
  • Calculations based on temperature and pressure
  • Handles various density units
  • Optional volume input for corrected volume
  • Saves and recalls last performed calculation
Read full description

This app provides volume and/or densities changes calculations due to temperature and pressure changes. Calculations are for Crude Oil, Refined Products, Lube Oils, and Specialized products. Refined Products include gasolines, alkylate, naphtha, jet fuel, kerosene, diesel. Minimum data requirements are: Density (API, S.G. or kg/m3), temperature (°F) at which density was measured and pressure (PSI). A volume is not required, but if entered, the corrected volume will be calculated. The volume measurement conditions need be indicated: either at (1) the density temperature and pressure or (2) at the Alternate temperature and pressure. Volume units of measure are not required. The latest case performed is saved and can be recalled from memory. Base conditions are 60°F and 0 PSI . Based on API published correlations.

Screenshots

Oil Tanker4 screens
Petroleum VCF Basic4 screens

Verdict

The call

The clearest difference is price: Petroleum VCF Basic at Free against Oil Tanker's $4.99. Oil Tanker's advantage is iOS requirement (13.0 vs 16.1). On update cadence, ads, in-app purchases 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

Petroleum VCF Basic is free to download; Oil Tanker costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on January 14, 2026 and June 4, 2026 respectively.

Scorecard2 real differences · 7 level
Oil Tanker versus Petroleum VCF Basic: the parameters behind the verdict, then further details
ParameterOil TankerPetroleum VCF Basic
Price$4.99Free — better
Rating5.0 (2 ratings) — better
Number of ratings2 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree
DevicesiPhone, iPod — betteriPhone
Requires iOS13.0 — better16.1
Further details — not scored
Size29 MB2 MB
Age rating4+4+
DeveloperAndrey AndreyevJose Maldonado

In-app purchases

None

Oil Tanker

No in-app purchases

None

Petroleum VCF Basic

No in-app purchases

Questions

Is Oil Tanker free?
Oil Tanker costs $4.99, with no in-app purchases.
Is Petroleum VCF Basic free?
Petroleum VCF Basic is free to download, with no in-app purchases.
Do Oil Tanker or Petroleum VCF Basic have ads?
Neither Oil Tanker nor Petroleum VCF Basic shows ads.
Which is updated more often, Oil Tanker or Petroleum VCF Basic?
Oil Tanker ships an update every 2 months, and Petroleum VCF Basic every 2 months. Most recently, Oil Tanker was updated on January 14, 2026 and Petroleum VCF Basic on June 4, 2026.

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