CES Test vs Power System Lab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CES Test
Prepare for marine certification exams with a comprehensive collection of Crew Evaluation System tests and answers. Features include preparation, exam, and marathon modes, plus a question search function.
- CES test preparation
- Exam mode
- Marathon mode
- Question search
- Engine tests
- Deck tests
- Detailed tests
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All Seagull CES (Crew Evaluation System) tests and answers for marine specialists. Application features: • Mode "Preparation" • Mode "Exam" • Mode "Marathon" • Questions search A large number of CES tests for preparing sailors for exams and certification: Deck, Engine, Detailed: Engine: - Engine Generic Management; - Engine Generic Operational; - Engine Medium Speed Management; - Engine Medium Speed Operational; - Engine Slow Speed Management; - Engine Slow Speed Operational; - Engine Steam Engine Management; - Engine Steam Engine Operational; - Engine Support; Deck: - Oil Tanker. Operational (Deck); - Oil Tanker. Support (Deck); - Oil Tanker. Management (Deck); - Chemical Tanker. Management (Deck); - Chemical Tanker. Operational (Deck); - Chemical Tanker. Support (Deck); - Anchor Handling. Management (Deck); - Anchor Handling. Operational (Deck); - Anchor Handling. Support (Deck); - Container. Management (Deck); - Container. Operational (Deck); - Container. Support (Deck); - Anchor Handling (Incl. DP). Management (Deck); - Anchor Handling (Incl. DP). Operational (Deck); - Anchor Handling (Incl. DP). Support (Deck); - LNG tanker. Management (Deck); - LNG tanker. Operational (Deck); - LNG tanker. Support (Deck); - LPG tanker. Management (Deck); - LPG tanker. Operational (Deck); - LPG tanker. Support (Deck); - Bulk carrier. Management (Deck); - Bulk carrier. Operational (Deck); - Bulk carrier. Support (Deck); - General cargo. Management (Deck); - General cargo. Operational (Deck); - General cargo. Support (Deck); - Non-Vessel Specific. Management (Deck); - Non-Vessel Specific. Operational (Deck); - Non-Vessel Specific. Support (Deck); - Passenger (Non-RoRo). Management (Deck); - Passenger (Non-RoRo). Operational (Deck); - Passenger (Non-RoRo). Support (Deck); - Platform Supply. Management (Deck); - Platform Supply. Operational (Deck); - Platform Supply. Support (Deck); - Platform Supply (Incl. DP). Management (Deck); - Platform Supply (Incl. DP). Operational (Deck); - Platform Supply (Incl. DP). Support (Deck); - Pure Car Carrier. Management (Deck); - Pure Car Carrier. Operational (Deck); - Pure Car Carrier. Support (Deck); - Reefer. Management; - Reefer. Operational; - Reefer. Support; - RORO cargo. Management; - RORO cargo. Operational; - RORO cargo. Support); - RORO passenger. Management; - RORO passenger. Operational; - RORO passenger. Support; - Seismic Survey. Management - Seismic Survey. Operational - Seismic Survey. Support - Seismic Survey (Incl. DP). Management; - Seismic Survey (Incl. DP). Operational; - Seismic Survey (Incl. DP). Support; - Shuttle Tanker. Management; - Shuttle Tanker. Operational; - Shuttle Tanker. Support; Detailed: Cargo Handling And Stowage: All tests; Catering: - Catering. Cook (Detailed); - Catering. Messboy (Detailed); Controlling operation of ship: - FF Advanced; - FF Basic; - Security Awareness; - SSO; - Survival Advanced; - Survival Basic; Dynamic Positioning: - Dynamic Positioning Management; - Dynamic Positioning Operational; ETO: - ETO Management; - ETO Operational; Electrical: - Electrical Management; - Electrical Operational; Flag State Tests: - Norway; - UK Master; - UK Mates; Maintenance&Repair: - Maintenance&Repair. Management; - Maintenance&Repair. Operational; - Maintenance&Repair. Support; Marine Engineering: - Marine Engineering. Management; - Marine Engineering. Operational; - Marine Engineering. Support; Maritime English: - Maritime English. Deck; - Maritime English. Engine; - Maritime English. Reading & Listening; Navigation: - Navigation. Management; - Navigation. Operational; - Navigation. Support; Radio communication: - Radio communication. GMDSS;
Power System Lab
This app offers a comprehensive learning experience for marine electrical systems through interactive simulations, practical tools, and engaging games. It allows users to explore virtual environments, perform diagnostics, and test their knowledge with various challenges. The app also includes useful calculation tools and customization options.
- Interactive marine electrical simulations
- Virtual instruments and diagnostic tools
- Four educational games
- Electrical calculation tools
- Customizable learning environment
- Progress tracking and account sync
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Power System Lab brings marine electrical learning, hands-on simulations and practical tools to cadets, electro-technical officers and anyone studying shipboard electrical systems on iPhone and iPad. Explore your learning island: follow explanations and activities, try virtual instruments and track your route. Change circuit parameters on virtual benches and compare the results. Investigate your training ship. Inspect marked components, collect findings and choose diagnostic actions. Work through repair and verification stages, explore equipment and prepare the vessel for a voyage. Four games bring variety to your practice: • Knowledge Tower: drop containers from a crane, keep the stack balanced and collect short facts. Compare your best runs in weekly and all-time player standings. There are no cash prizes. • Name the equipment: 250 photographs covering 45 types of equipment, components and tools. Choose one of four answers, learn its purpose, zoom into the image and revisit mistakes. Progress syncs with your account. • Match-three: component combinations, electrical effects and short facts about electricity and marine systems. • Crosswords: marine and electrical terms, new ports and grid zoom. Russian and English puzzles keep separate saved letters and progress. Keep useful tools within reach: electrical calculations, 4–20 mA signal scaling, Pt100/Pt1000, resistor markings, Modbus register conversion and more. Search, save favorites and check formulas. Set up clocks for your ship, home and ports. English and Russian interface. Native layouts adapt to iPad rotation. Choose a character and uniform, adjust effects and animations, or study with gentle surf and distant gulls. There are no ads. The tower leaderboard lets you hide another player or report their name. All users need a subscription for the main features after sign-in. If Apple confirms introductory-offer eligibility, either plan starts with 3 free days. You must confirm the subscription through Apple immediately; registration alone does not start a trial. Only one introductory offer is available per Apple Account for the subscription group. Switching plans or creating another Power System Lab account does not provide another trial. If ineligible, the paid period starts immediately. After the trial, the subscription automatically renews at US$4.99 per month or US$39.99 per year in the US storefront unless canceled in time. Both plans provide the same access; the year is charged upfront. Apple shows your localized price and terms before confirmation. To avoid the first charge, cancel through Apple at least 24 hours before the trial ends. Remaining free days after cancellation are not guaranteed. Internet is needed for sign-in, subscription verification, new learning actions and sync. In iOS, calculations and clocks run locally after access is verified; their settings and favorites sync when connected. The subscription also covers the website for the same account. Purchases are made only through Apple inside iOS; there is no separate web payment. Restore Purchases, subscription management, support, legal documents and account deletion remain available without a purchase. Restore with the original Apple Account and Power System Lab account. Deleting the app or account does not cancel an Apple subscription. Apple handles refunds; mandatory consumer rights are preserved. For independent study. The app does not replace formal training, equipment documentation or vessel procedures and does not provide professional certification. Support: support@powersystemlab.net Privacy: https://powersystemlab.net/legal/privacy?lang=en Terms: https://powersystemlab.net/legal/terms?lang=en Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: Power System Lab at 67% against CES Test's 17%. Power System Lab also leads on price (Free vs $5.99) and in-app purchases (none vs 1). CES Test's advantage is rating (5.0 vs 4.0) and iOS requirement (13.0 vs 17.0). On 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
Power System Lab is free to download; CES Test costs $5.99 up front. CES Test sells 1 one-off in-app purchase. Power System Lab asks for nothing beyond the download.
CES Test holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews complicate that: 17% of CES Test's written reviews are positive against 67% of Power System Lab's, so the app with the better star average is not the one people write more warmly about.
CES Test ships an update every 2 months, Power System Lab every 3 days. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.
| Parameter | CES Test | Power System Lab |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 4.0 (3 ratings) |
| Positive reviews | 16.7% of reviews | 66.7% of reviews — better |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid — better | Subscription |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 65 MB | 256 MB |
| Age rating | 4+ | 12+ |
| Developer | Andrey Andreyev | Serhii Zai |
Customer experience
CES Test
Power System Lab
In-app purchases
CES Test
- ces test questions and answers$6.99
Power System Lab
No in-app purchases
Questions
Is CES Test free?
Is Power System Lab free?
Which has better reviews, CES Test or Power System Lab?
Do CES Test or Power System Lab have ads?
Which is updated more often, CES Test or Power System Lab?
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