Comparison

Petroleum VCF Basic vs Petroleum Engineering+

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

Head to head
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.

About

Petroleum Engineering+

Master petroleum engineering concepts through engaging quizzes covering a wide range of topics from geology to production. Ideal for students and professionals seeking to enhance their knowledge and skills in the oil and gas industry.

Highlights
  • Comprehensive quiz coverage
  • Topics from geology to production
  • Boost knowledge and skills
  • Engaging learning experience
  • Suitable for students and professionals
Features
Read full description

Master Petroleum Engineering with Fun and Engaging Quizzes! Dive into the world of Petroleum Engineering with our comprehensive quiz app, designed to boost your knowledge, confidence, and skills. Whether you're a student, practitioner, or just exploring the field, this app is your ultimate companion for learning and growth. Topics Covered: Introduction to Petroleum Engineering: -History and evolution of the petroleum industry", -Overview of upstream, midstream, and downstream sectors -Role of petroleum engineers Petroleum Geology and Geophysics: - Origin and accumulation of hydrocarbons - Types of reservoir rocks and cap rocks - Structural and stratigraphic traps - Seismic methods and interpretation - Geological mapping and subsurface modeling Drilling Engineering: - Types of drilling rigs and their components - Drilling fluids and their properties - Casing design and cementing practices - Directional and horizontal drilling - Drill string design and bit selection Reservoir Engineering Fundamentals: - Reservoir fluid properties (PVT analysis) - Porosity and permeability measurement - Fluid saturation and capillary pressure - Material balance and reservoir drive mechanisms - Reservoir characterization and classification Well Logging and Formation Evaluation: - Types of logging tools (SP, gamma ray, resistivity) - Nuclear and acoustic logging techniques - Interpretation of log data for reservoir evaluation - Core sampling and laboratory analysis - Formation testing and pressure transient analysis Production Engineering: - Well completion techniques (open hole, cased hole) - Artificial lift systems (ESP, gas lift, rod pumps) - Well stimulation (acidizing, hydraulic fracturing) - Flow assurance and sand control - Production monitoring and optimization Enhanced Oil Recovery (EOR) Techniques: - Primary, secondary, and tertiary recovery concepts - Thermal methods (steam flooding, in-situ combustion) - Gas injection (CO₂, nitrogen, miscible flooding) - Chemical EOR (polymer, surfactant, alkaline) - Screening criteria and field implementation Natural Gas Engineering: - Gas properties and phase behavior - Gas reservoir performance and deliverability - Gas production and compression systems - Gas processing and dehydration - Liquefied natural gas (LNG) and gas monetization Petroleum Refining and Processing: - Overview of refining processes - Atmospheric and vacuum distillation - Conversion processes (cracking, reforming) - Product blending and specifications - Emission control and waste management Surface Facilities and Field Processing: - Field processing of oil, gas, and water - Separation equipment and design - Flowlines, pipelines, and gathering systems - Surface facility layout and operation - Maintenance and integrity management Reservoir Simulation and Modeling: Formation Damage and Wellbore Integrity: Health, Safety, and Environmental Management (HSE): Petroleum Economics and Project Evaluation: Features You'll Love: - Adaptive Quizzes: Questions tailored to your skill level, ensuring a personalized learning experience. - Detailed Explanations: Learn as you go with in-depth answers and references. - Timed Challenges: Test your speed and accuracy under time pressure for an extra thrill. - Progress Tracking: Keep tabs on your improvement with detailed analytics and reports. - User-Friendly Design: Intuitive interface for smooth navigation and focus. Who is it for? - Petroleum Engineering students preparing for exams. - Professionals brushing up on their knowledge. - Anyone interested in understanding the principles of occupational therapy. Download now and make learning occupational therapy enjoyable and effective! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://forwaelade.web.app/PetroleumEngineering/privacy-policy

Screenshots

Petroleum VCF Basic4 screens
Petroleum Engineering+4 screens

Verdict

The call

The clearest difference is in-app purchases: Petroleum VCF Basic at none against Petroleum Engineering+'s 6. Petroleum Engineering+'s advantage is update cadence (monthly vs every 2 months). On price, rating, ratings volume and ads 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. Petroleum Engineering+ sells 6 in-app purchases, starting at $9.99 per month. Petroleum VCF Basic asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Petroleum VCF Basic against 5.0 for Petroleum Engineering+. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

Petroleum VCF Basic ships an update every 2 months, Petroleum Engineering+ monthly. The most recent releases landed on June 4, 2026 and September 23, 2026 respectively.

Scorecard3 real differences · 6 level
Petroleum VCF Basic versus Petroleum Engineering+: the parameters behind the verdict, then further details
ParameterPetroleum VCF BasicPetroleum Engineering+
PriceFreeFree
Rating5.0 (2 ratings)5.0 (1 ratings)
Number of ratings2 — better1
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhoneiPhone, iPad — better
Requires iOS16.1 — better17.0
Further details — not scored
Size2 MB18 MB
Age rating4+4+
DeveloperJose MaldonadoForwa Elade Wunde

Customer experience

Petroleum VCF Basic

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Petroleum Engineering+

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Petroleum VCF Basic

No in-app purchases

6 purchases

Petroleum Engineering+

Subscriptions3
  • 1 Month$9.991 Month
  • 6 Months$19.996 Months
  • 1 Year$29.991 Year
One-time3
  • 1500$0.99
  • 3500$1.99
  • 9000$3.99

Questions

Is Petroleum VCF Basic free?
Petroleum VCF Basic is free to download, with no in-app purchases.
Is Petroleum Engineering+ free?
Petroleum Engineering+ is free to download, with in-app purchases available.
Which has better reviews, Petroleum VCF Basic or Petroleum Engineering+?
Petroleum VCF Basic and Petroleum Engineering+ are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do Petroleum VCF Basic or Petroleum Engineering+ have ads?
Neither Petroleum VCF Basic nor Petroleum Engineering+ shows ads.
Which is updated more often, Petroleum VCF Basic or Petroleum Engineering+?
Petroleum VCF Basic ships an update every 2 months, and Petroleum Engineering+ monthly. Most recently, Petroleum VCF Basic was updated on June 4, 2026 and Petroleum Engineering+ on September 23, 2026.

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