Comparison

EASA Part 66 Exam Trainer vs Systems Trainer

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

Head to head
About

EASA Part 66 Exam Trainer

Prepare for EU Part 66 aircraft maintenance engineer exams with over 750 multiple-choice questions across various modules. This app serves as a supplementary training tool for classroom learning, allowing you to practice on the go.

Highlights
  • Over 750 multiple-choice questions
  • Covers multiple EU Part 66 modules
  • B1.1 / A1 exam preparation
  • Supplementary training tool
  • Practice on the go
  • Developed by skilled engineers
Features
Read full description

Test your skills for the EU PART 66 modules exams with this neat traning app. There are more than 750 questions divided into all the different modules for B1.1 / A1 exams. The Part 66 Aircraft Maintenance Engineer Multiple Choice App is the perfect supplement to the regular part 66 classroom training, where you can train yourself on the run. Modules featured in this version: + MODULE 1: MATHEMATICS + MODULE 2: PHYSICS + MODULE 3: ELECTRICAL FUNDAMENTALS + MODULE 4: ELECTRONIC FUNDAMENTALS + MODULE 5: DIGITAL TECHNIQUES / ELECTRONIC INSTRUMENT SYSTEMS + MODULE 6: MATERIALS & HARDWARE + MODULE 7: MAINTENANCE PRACTICES + MODULE 8: BASIC AERODYNAMICS + MODULE 9: HUMAN FACTORS + MODULE 10: AVIATION LEGISLATION + MODULE 11: AEROPLANE AERODYNAMICS, STRUCTURES AND SYSTEMS + MODULE 15: GAS TURBINE ENGINE + MODULE 17: PROPELLER What we are currently working on for the next version: + B1.2 + B1.3 This app is developed to help you with the part 66 multiple choice exams, and you are very welcome to help us improve the app by sending us multiple choice questions and suggestions for improvements. Furthermore, if you find some bugs please send don’t hesitate to send us an email. Please note that this app is an unofficial app made by skilled Aircraft Maintenance Engineers from all over the world. We do our best to keep it updated at all times and make the best content to our future colleagues. Please help us in our work by sharing the app with your friends, if you like what we are doing. If you have any critical comments to the app's functionality or content, please use the in-app commenting system to let us know, how we can make the app even better. Thanks in advance :)

About

Systems Trainer

Features
Read full description

Systems Trainer – Challenger 3500 Systems Trainer Systems Trainer is the dedicated study companion for pilots flying or transitioning to the Bombardier Challenger 3500. Designed to help you build, maintain, and sharpen your aircraft systems knowledge, whether you're preparing for a recurrent check, an oral exam, or simply want to stay sharp between flights. COMPREHENSIVE SYSTEMS COVERAGE: Study all Challenger 3500 aircraft systems in one place: • Air Conditioning & Pressurization • Automatic Flight Control & Autothrottle • Auxiliary Power Unit • Communications • Electrical • Fire Protection • Flight Controls & Flight Instruments • Fuel & Hydraulics • Ice & Rain Protection • Landing Gear & Lighting • Limitations • Navigation • Oxygen & Emergency Equipment • Powerplant • Aural & Visual Alerts THREE QUIZ MODES: Challenge yourself the way that suits you best. Multiple Choice tests your recall against plausible alternatives. Flashcard mode lets you self-assess at your own pace. True/False sharpens your instinct for correct procedures and limitations. Mix and match modes or focus on a single system, the choice is yours. IMMEDIATE ACTION ITEMS: Train the procedures that matter most under pressure. The dedicated Immediate Action Items section lets you study and drill all emergency memory items with timed drills, step-by-step review, and a strict mastery standard: three consecutive correct answers within the target time. Because in a real emergency, there is no time to think. SMART PROGRESS TRACKING: Every question you answer contributes to your progress. Track mastery per system, monitor your overall accuracy, follow your daily study streaks, and earn points as you grow your knowledge. The Statistics view gives you a clear picture of where you stand and where to focus next. ACHIEVEMENTS: Stay motivated with a full achievement system spanning four categories. From your first question to mastering all systems and all Immediate Action Items, milestones reward consistent effort and depth of knowledge. BOOKMARKS: Flag questions you want to revisit. Build your own personal review list of tricky limitations, unfamiliar procedures, or topics you want to reinforce before your next flight. BUILT FOR PILOTS: Systems Trainer is built with technical accuracy as the top priority. All content has been independently compiled for study purposes and reflects publicly available aircraft systems knowledge. The app is designed as a study aid to complement your official training, not to replace it. Always refer to current approved documentation for operational use. Study smarter. Stay current. Know your aircraft. Systems Trainer is an independent study aid and is not affiliated with, endorsed by, or approved by Bombardier or any regulatory authority. All content is intended for study purposes only.

Screenshots

EASA Part 66 Exam Trainer4 screens
Systems Trainer4 screens

Verdict

The call

The clearest difference is in-app purchases: Systems Trainer at none against EASA Part 66 Exam Trainer's 10. Systems Trainer also leads on update cadence (every 2 weeks vs every 7 months). EASA Part 66 Exam Trainer's advantage is iOS requirement (15.0 vs 17.6). 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. EASA Part 66 Exam Trainer sells 10 one-off in-app purchases. Systems Trainer asks for nothing beyond the download.

UpkeepUpdate frequency

EASA Part 66 Exam Trainer ships an update every 7 months, Systems Trainer every 2 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
EASA Part 66 Exam Trainer versus Systems Trainer: the parameters behind the verdict, then further details
ParameterEASA Part 66 Exam TrainerSystems Trainer
PriceFreeFree
Rating4.8 (6 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings6 — better—
Update frequencyEvery 7 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.6
Further details — not scored
Size79 MB1000 MB
Age rating4+4+
DeveloperDavid Alexander HansenPatrick Heinrich

In-app purchases

10 purchases

EASA Part 66 Exam Trainer

One-time10
  • Module 5 for the Part 66 exam$0.99
  • Module 6 for the Part 66 exam$0.99
  • Module 7 for the Part 66 exam$0.99
Show 7 more
  • Module 8 for the Part 66 exam$0.99
  • Module 10 for the Part 66 exam$0.99
  • Module 15 for the Part 66 exam$0.99
  • Module 9 for the Part 66 exam$0.99
  • Module 11A for the Part 66 exam$0.99
  • Module 4 for the Part 66 exam$0.99
  • Unlock all modules forever$2.99
None

Systems Trainer

No in-app purchases

Questions

Is EASA Part 66 Exam Trainer free?
EASA Part 66 Exam Trainer is free to download, with in-app purchases available.
Is Systems Trainer free?
Systems Trainer is free to download, with no in-app purchases.
Do EASA Part 66 Exam Trainer or Systems Trainer have ads?
Neither EASA Part 66 Exam Trainer nor Systems Trainer shows ads.
Which is updated more often, EASA Part 66 Exam Trainer or Systems Trainer?
EASA Part 66 Exam Trainer ships an update every 7 months, and Systems Trainer every 2 weeks. Most recently, EASA Part 66 Exam Trainer was updated on November 3, 2026 and Systems Trainer on November 5, 2026.

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