Comparison

CES Trainer 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

CES Trainer

Features
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The CES Trainer app is your ultimate companion for mastering the CES exam. With a focused and practical approach, CES Trainer makes studying straightforward, efficient, and effective. Key Features: Comprehensive Question Bank: Access a wide range of questions covering all key topics to ensure you're fully prepared for every aspect of the CES exam. Favorite Questions: Mark challenging questions as favorites to revisit and refine your understanding of difficult topics. Practice & Exam Modes: Study at your own pace in practice mode or simulate real exam conditions. Quick Navigation: Enjoy a clean, user-friendly interface that makes it easy to browse and study efficiently. The CES Trainer is designed to help you succeed by focusing on the areas that matter most. Get started today and take the next step toward passing your CES exam with confidence. Some graphic elements created by Freepik.

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

CES Trainer4 screens
Engine Room Simulator4 screens

Verdict

The call

The clearest difference is update cadence: CES Trainer at daily against Engine Room Simulator's every 3 weeks. On price, 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

Both are free to download. CES Trainer sells 1 one-off in-app purchase and Engine Room Simulator sells 2 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CES Trainer ships an update daily, Engine Room Simulator every 3 weeks. The most recent releases landed on September 10, 2026 and September 6, 2026 respectively.

Scorecard1 real difference · 8 level
CES Trainer versus Engine Room Simulator: the parameters behind the verdict, then further details
ParameterCES TrainerEngine Room Simulator
PriceFreeFree
Rating—4.8 (4 ratings) — better
Number of ratings—4 — better
Update frequencyDaily — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhoneiPhone, iPad — better
Requires iOS17.416.0 — better
Further details — not scored
Size59 MB174 MB
Age rating12+4+
DeveloperYevgenii KryzhanivskyiLouie Juera

In-app purchases

1 purchases

CES Trainer

One-time1
  • Buy me a beer$4.99
2 purchases

Engine Room Simulator

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

Questions

Is CES Trainer free?
CES Trainer is free to download, with in-app purchases available.
Is Engine Room Simulator free?
Engine Room Simulator is free to download, with in-app purchases available.
Do CES Trainer or Engine Room Simulator have ads?
Neither CES Trainer nor Engine Room Simulator shows ads.
Which is updated more often, CES Trainer or Engine Room Simulator?
CES Trainer ships an update daily, and Engine Room Simulator every 3 weeks. Most recently, CES Trainer was updated on September 10, 2026 and Engine Room Simulator on September 6, 2026.

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