Comparison

CompMan Engine Operational vs Engine Room Simulator

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

Head to head
About

CompMan Engine Operational

Features
Read full description

Competence Management (COMPMAN) Consultancy Inc. recognizes the value of Training and Review for the Licensure Examination in building up knowledge and understanding not only to qualify but gain the proficiency and confidence required in carrying out related tasks on board and be able to compete and excel globally. To achieve this goal, COMPMAN took advantage of technology particularly the use of tablets and the web/ internet. COMPMAN also introduced the elements of identifying and monitoring the strength and weakness of the learner and use these as basis for effective counseling and coaching. This strategy is basic but proven methodology in competence development, strength motivates and increases the level of confidence while the weakness once accepted opens a door towards continuous improvement. Features: - Works offline to be able to review anytime, anywhere - Different review modes to help the reviewers in their studying from familiarization to timed mode to challenge their gained knowledge - Saved their history to monitor their progress and to be able to continue later - Has search option to search unfamiliar questions from a given keyword

About

Engine Room Simulator

This app offers a high-fidelity simulation for marine engineering training. It allows users to practice shipboard engine-room procedures, from safety training to full voyage simulation, with clear guidance and feedback. Ideal for cadets, students, and seafarers to build practical skills anytime, anywhere.

Highlights
  • High-fidelity marine engineering simulation
  • PPE safety training and induction
  • Generator synchronization and startup
  • Full voyage simulation
  • Guided and assessment learning modes
  • Offline practice capability
Features
Read full description

Engine Room Simulator - ERS is a high-fidelity marine engineering training simulator for marine cadets, marine students, seafarers, and seamen who want to practice shipboard engine-room procedures with professional precision - anytime, anywhere, on mobile. Step into a realistic engine room and learn how a ship's machinery comes to life. From PPE safety training to generator synchronization to full voyage simulation, ERS turns complex marine engineering operations into repeatable, hands-on practice and onboard familiarization. MARITIME TRAINING, STEP BY STEP Work through guided engine room training modules with clear procedures, on-screen guidance, and instant feedback. This interactive training simulator builds from the fundamentals to full-plant operation - ideal for maritime education, competency training, and seafarer training. Practice the core shipboard systems: - PPE safety training and engine room safety induction - Emergency diesel generator cold-ship startup - Diesel Generator 1 and 2 starting - Diesel generator synchronization and paralleling - Seawater system and central seawater distribution - Freshwater system and cooling water system (LT/HT) - Lube oil system management - Fuel oil system pretreatment and service - Starting air system compressors and receivers - Boiler and steam plant operation - Marine diesel engine and engine startup training - Secure propulsion and propulsion control FULL VOYAGE SIMULATION Bring it all together in the Voyage Simulation hub - a connected engine room sandbox where shipboard systems and marine auxiliary systems operate at the same time. Perform system alignment training, manage the plant, handle electrical interlocks, and run the vessel like a real watchkeeping marine engineer. SAFETY FIRST, EVERY TIME Shipboard safety is built in. Complete your PPE and safety checks to unlock training modules, then gear up again every time you enter the engine room - just like real shipboard discipline. GUIDED AND ASSESSMENT LEARNING - Guided mode: a step-by-step narrator, on-screen pointers, and input gating help you learn each procedure correctly. - Assessment mode: an operations assessment with scoring and mistake tracking, unlocked once you complete the guided walkthrough. WHY ENGINE ROOM SIMULATOR - Built for marine cadets, marine engineering students, and working seafarers - Realistic P&ID-style shipboard system diagrams with pan and zoom - Authentic engine room operations, alarms, and trainer feedback - Premium, distraction-free full-screen interface - Practice marine engineering offline, on your own schedule - Repeatable drills and simulator practice to build muscle memory before you board Whether you are preparing for sea time, studying as a marine cadet, refreshing watchkeeping skills, or learning how a ship engine works, Engine Room Simulator - ERS is a complete marine simulator and ship systems simulator that gives you a safe, hands-on environment to learn, practice, and master engine room operations. ERS PRO Unlock the full marine engineering training experience, including all system modules and the complete Voyage Simulation, with ERS Pro. A yearly subscription and a one-time lifetime purchase are available. PRO OPTIONS • Pro Yearly: 1 year, auto-renewable subscription • Pro Lifetime: one-time purchase • Pro unlocks unlimited local saves and Pro-only features/components SUBSCRIPTION TERMS • Price is shown in your local currency before purchase • Payment is charged to your Apple ID at confirmation • Yearly Pro renews automatically unless canceled at least 24 hours before the end of the current period • Manage or cancel anytime in Apple ID account settings Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy Policy: https://electrosim.simlearningtech.com/privacy-policy

Screenshots

CompMan Engine Operational4 screens
Engine Room Simulator4 screens

Verdict

The call

The clearest difference is in-app purchases: CompMan Engine Operational at none against Engine Room Simulator's 2. CompMan Engine Operational also leads on iOS requirement (12.1 vs 16.0). Engine Room Simulator's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads 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. Engine Room Simulator sells 2 in-app purchases, starting at $9.99 per year. CompMan Engine Operational asks for nothing beyond the download.

UpkeepUpdate frequency

CompMan Engine Operational ships an update every 2 months, Engine Room Simulator every 3 weeks. The most recent releases landed on September 27, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 6 level
CompMan Engine Operational versus Engine Room Simulator: the parameters behind the verdict, then further details
ParameterCompMan Engine OperationalEngine Room Simulator
PriceFreeFree
Rating—4.8 (4 ratings) — better
Number of ratings—4 — better
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.1 — better16.0
Further details — not scored
Size33 MB174 MB
Age rating4+4+
DeveloperELOSOFT INCLouie Juera

In-app purchases

None

CompMan Engine Operational

No in-app purchases

2 purchases

Engine Room Simulator

Subscriptions1
  • ERS Pro Yearly3 Days trial$9.991 Year
One-time1
  • ERS Pro Lifetime$19.99

Questions

Is CompMan Engine Operational free?
CompMan Engine Operational is free to download, with no in-app purchases.
Is Engine Room Simulator free?
Engine Room Simulator is free to download, with in-app purchases available.
Do CompMan Engine Operational or Engine Room Simulator have ads?
Neither CompMan Engine Operational nor Engine Room Simulator shows ads.
Which is updated more often, CompMan Engine Operational or Engine Room Simulator?
CompMan Engine Operational ships an update every 2 months, and Engine Room Simulator every 3 weeks. Most recently, CompMan Engine Operational was updated on September 27, 2026 and Engine Room Simulator on October 7, 2026.

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