Comparison

Engine Programme vs Oilcalcs

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

Head to head
About

Engine Programme

This professional planning tool assists marine professionals in selecting ship engines by providing detailed technical specifications and fuel consumption data. It supports comparisons for a wide range of engine types, including advanced technologies for current and future emissions standards.

Highlights
  • Engine selection support
  • Detailed fuel consumption data
  • Engine layout diagrams
  • Technical specifications
  • Comparison of engine configurations
  • Support for modern engine technologies
Features
Read full description

EngineProgramme is a professional planning tool designed to support engine selection for large commercial vessels. From 450 kW GenSets to the world’s largest two-stroke engines approaching 100 MW, the app provides shipyards and marine professionals with reliable data for informed decision-making. Access detailed fuel consumption figures, engine layout diagrams, and technical specifications for both four-stroke engines and ME-generation two-stroke engines. EngineProgramme helps simplify complex comparisons and supports efficient planning across a wide range of engine configurations. Built with modern marine requirements in mind, the app supports planning with advanced technologies such as ME-generation two-stroke engines and common rail four-stroke systems, helping users evaluate solutions that meet current and future emissions standards. Whether comparing alternatives, validating layouts, or supporting early-stage design decisions, EngineProgramme delivers clear insights for the world’s most demanding engine applications.

About

Oilcalcs

This app provides comprehensive calculations for professionals in the oil and gas industry. It offers versatile tools for volume and weight conversions, density corrections, and blending calculations, supporting various industry tables and units.

Highlights
  • Volume and weight conversions
  • Density correction for special applications
  • Viscosity, pour point, and flash point blender
  • LNG and LPG density calculators
  • Support for ASTM tables and units
  • Data export to database
Features
Read full description

The most complete, flexible and versatile calculator for professionals in the oil and gas industry! Now optimized for iOS 26. Newly added features: - Calculator for Aromatics - Added the following tables to the oil conversion screen: table 4, 8, 9, 10, 11, 12, 13, 14, 52, 56, 57, 58 - Added a field for density correction in the main calculator (and quantity editor) for the calculation of special applications in case a thermal expansion coefficient is not available - Viscosity / pour point / flash point blender - LNG density calculator - Viscosity / Temperature calculator - Density data for both the LPG and LNG density calculator are stored in the phone for easy retrieval The app uses the ASTM tables / formulas to calculate weights and volumes based on entered density15, density20, relative density or API, observed volume, pressure and temperature, and calculates the following: - Volume correction factor (to number of decimals of your own choice or as set by table Version) - Metric tons (vacuum) - Metric tons (air) - GSV (M3 @15) - BBLS (@60) - Longtons - Gallons OilCalcs contains both ASTM 1980 and ASTM 2009 tables as well as the ASTM 1952 version of LPG Table 54, and users can select which table to use in the settings screen. Users can also select whether they want to calculate using SI Metric units or Imperial units. Precision for VCF, GSV, MTons, LTons and Bbls can be changed using the settings screen. Settings are saved in the app so that when you use the app next time it will calculate with your chosen settings. Densities can be entered in the following formats which are automatically recognized: e.g 0.9664 / 966.4 / 9664 The app can calculate for crude oil, black and white products, lubrication oils and special applications, and input can be changed between density in vacuum at 15 and 20 deg C/ API / relative density / observed, and degrees Celsius / Fahrenheit by touching the applicable buttons. The user has the choice to calculate using as input observed M3 / M3 at 15 / observed Barrels / Barrels 60 / Metric tons air/vac / Ltons / Gallons. The user can also calculate weights of LPG / NGL, using either density @ 15C, relative density @60F, observed density or density @ 20C. Aside from the conversion screen with conversions between API, observed density, density 15, density 20 and relative density, there is also a screen with conversions used in LPG / NGL. For products, lube oils and crude there are two tools for calculating final density when blending two components: one tool that calculates the blend after loading the 2nd component, and another tool that lets the user choose the two components and advises which component to load first, based on density 15C or API 60F and actual temperature of the components. Both tools also calculate volume shrinkage due to blending. A utility has been included that enables the user to export data from the calculator screen directly into a database for future reference. The same utility can be used to enter data manually and edit previously entered data. For a detailed tutorial please visit our webpage (http://mooringmarineconsultancy.wordpress.com). Download the manual here: https://mooringmarineconsultancy.wordpress.com/wp-content/uploads/2020/09/oilcalcs-for-iphone-user-manual.pdf

Screenshots

Engine Programme4 screens
Oilcalcs4 screens

Verdict

The call

The clearest difference is price: Engine Programme at Free against Oilcalcs's $9.99. Engine Programme also leads on rating (5.0 vs 4.8). Oilcalcs's advantage is ratings volume (46 vs 1) and iOS requirement (15.6 vs 17.6). 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

Engine Programme is free to download; Oilcalcs costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Engine Programme holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Oilcalcs has 46 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.

Scorecard5 real differences · 5 level
Engine Programme versus Oilcalcs: the parameters behind the verdict, then further details
ParameterEngine ProgrammeOilcalcs
PriceFree — better$9.99
Rating5.0 (1 ratings) — better4.8 (46 ratings)
Positive reviews—100.0% of reviews
Number of ratings146 — better
Update frequencyEvery 4 monthsEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.615.6 — better
Further details — not scored
Size6 MB2 MB
Age rating4+4+
DeveloperEverllence SEron mooring

Customer experience

Engine Programme

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

Oilcalcs

All ratings46 ratings
Positive93.5%
Neutral6.5%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Engine Programme

No in-app purchases

None

Oilcalcs

No in-app purchases

Questions

Is Engine Programme free?
Engine Programme is free to download, with no in-app purchases.
Is Oilcalcs free?
Oilcalcs costs $9.99, with no in-app purchases.
Which has better reviews, Engine Programme or Oilcalcs?
Engine Programme is rated higher. Engine Programme averages 5.0 out of 5 from 1 ratings, while Oilcalcs averages 4.8 from 46 ratings.
Do Engine Programme or Oilcalcs have ads?
Neither Engine Programme nor Oilcalcs shows ads.
Which is updated more often, Engine Programme or Oilcalcs?
Engine Programme ships an update every 4 months, and Oilcalcs every 4 months. Most recently, Engine Programme was updated on September 21, 2026 and Oilcalcs on September 17, 2026.

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