AeroEngineS vs EASA Part 66 Exam Trainer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AeroEngineS
This app simulates the thermodynamic cycles and performance of various aircraft and rocket engines. It calculates key parameters like thrust, mass flow, and emissions, and can predict compressor map operating points.
- Turbojet and turbofan engine simulation
- Rocket engine cycle analysis
- Ramjet engine simulation
- Emissions calculation
- Compressor map prediction
- Thermodynamic cycle analysis
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Aircraft Engine Performance at Design Point - Subsonic/Supersonic 1-Spool Turbojet - Subsonic 2-Spool Turbofan - Subsonic 2-Spool Boosted Turbofan - Subsonic 3-Spool Turbofan - Analysis of the Thermodynamic Cycle - Nozzle Area and Performance (Thrust, Power etc.) calculation - Mass Flows (Core, Bypass, Fuel) - Automatic calculation of ambient conditions based on the flight altitude using the International Standard Atmosphere model - Automatic calculation of Cp, gama, R for each component based on temperature and Fuel to Air Ratio - Automatic calculation of isentropic efficiency for each compressor and turbine based on polytropic efficiency and pressure ratio Hybrid Precooled Rocket Engine at Design Point - Analysis of the combined Thermodynamic Cycles with Air, Hydrogen & Helium as working fluids Ramjet Engine at Design Point - Simulation of the thermodynamic cycle of a hydrogen-fuelled Ramjet engine at optimized conditions. Ramjet Engine at Design Point - Simulation of the thermodynamic cycle of a hydrogen-fuelled Ramjet engine at optimized conditions. Supersonic 2-spool Turbojet Engine at Design Point - Simulation of the thermodynamic cycle of a Supersonic 2-spool turbojet engine with reheat. Aircraft Emissions - Emissions calculation for aircraft engines in LTO cycle and Cruise - Type of turbofan engines used: 1. Subsonic 2-Spool, 2. Subsonic 3-Spool Compressor Map Operating Point Prediction using - Scaling Techniques on an existing HPC map - Artificial Neural Networks to interpolate the existing map's data ______________________________________________________ Developer: Aggelos Gaitanis Original creator: Evangelia Pontika HyRE, Ramjet tab programmer: Spiros Tsentis Supersonic 2-spool Reheated tab programmer: Anastasios Saflekos Emissions tab developer/programmer: Maria Bakali Advisor: Ioanna Aslanidou, Konstantinos Kyprianidis Supervisor: Anestis Kalfas
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.
- 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
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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 :)
Screenshots
Verdict
The clearest difference is in-app purchases: AeroEngineS at none against EASA Part 66 Exam Trainer's 10. AeroEngineS also leads on update cadence (every 3 days vs every 7 months). EASA Part 66 Exam Trainer's advantage is ratings volume (6 vs 1). On price, rating, ads and monetization model 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
Both are free to download. EASA Part 66 Exam Trainer sells 10 one-off in-app purchases. AeroEngineS asks for nothing beyond the download.
AeroEngineS holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: EASA Part 66 Exam Trainer has 6 ratings behind it against 1, so its average is the more settled of the two.
AeroEngineS ships an update every 3 days, EASA Part 66 Exam Trainer every 7 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | AeroEngineS | EASA Part 66 Exam Trainer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.8 (6 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 6 — better |
| Update frequency | Every 3 days — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 7 MB | 79 MB |
| Age rating | 4+ | 4+ |
| Developer | Aristotle University of Thessaloniki | David Alexander Hansen |
Customer experience
AeroEngineS
EASA Part 66 Exam Trainer
In-app purchases
AeroEngineS
No in-app purchases
EASA Part 66 Exam Trainer
- 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
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- 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
Questions
Is AeroEngineS free?
Is EASA Part 66 Exam Trainer free?
Which has better reviews, AeroEngineS or EASA Part 66 Exam Trainer?
Do AeroEngineS or EASA Part 66 Exam Trainer have ads?
Which is updated more often, AeroEngineS or EASA Part 66 Exam Trainer?
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