Part66 vs Part
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Part66
Prepare for EASA Part 66 aircraft maintenance license exams with sample tests and flashcards. Generate unlimited random exams and analyze results to identify weak areas. Covers modules relevant to B1.1 and potentially FAA licenses.
- Sample exams for EASA Part 66 modules
- Flashcards for purchased modules
- Unlimited random exam generation
- Exam timer with real-world time limits
- Analysis of results and weak point identification
- Email results for review
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Part66-Engineer app is for prospective aircraft engineers who are studying for their EASA Part 66 basic maintenance licence; the app offers a full range of sample exams from Module 1 to Module 17 specifically tailored to meet the B1.1 licence. As of Version 3.0(24/11/2018); Module 7, Module 8, Module 9, Module 10, Module 15 and Module 17 have exams and flashcards available for purchase. Flashcards are now added for all the completed modules (7,8,9,10,15 & 17). Many questions are also similar to the FAR Part-65 standard for those engineers applying for their FAA license. Exams will be available for all modules in upcoming releases. Version 3.0 includes the option to download a question and flashcard bank and the user can generate unlimited random exams from the available questions. Each exam is set to the same standard as a 'real' EASA Part-147 supplied exam. Exam timer shows the real world time available for each exam and no questions are repeated. The user is able to email and analyze their results. The app will highlight weak points and give a suggested reading. Total questions available in this app = 5,472 questions. Total questions available per Module for this version: Module 1 = 32 Module 2 = 52 Module 3 = 52 Module 4 = 20 Module 5 = 50 Module 6 = 72 Module 7 = 844 questions & 780 flashcards. Module 8 = 239 questions & 170 flashcards. Module 9 = 290 questions & 242 flashcards. Module 10 = 426 questions & 304 flashcards. Module 11 = 140 Module 15 = 665 questions & 480 flashcards. Module 17 = 443 questions & 171 flashcards.
Part
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Get access to thousands of practice questions, realistic exam simulations, and detailed analytics that show you exactly where to focus. Your aircraft maintenance license is closer than you think. Welcome to the smartest, most effective way to prepare for your EASA Part-66 Aircraft Maintenance License (AML). Whether you're aiming for a B1, B2, or A license, our platform is designed to help you turn your study time into passing scores. WHO IS THIS FOR? Aspiring Aircraft Maintenance Technicians Students at Part-147 approved schools Experienced engineers seeking license category upgrades Experienced A&P Mechanics seeking EASA certification Master the EASA Part-66 syllabus and pass your aircraft maintenance license exams with confidence! Part-66 Pro: EASA Exam Prep is the essential study tool for aviation technicians and engineers, whether you're working towards your A, B1, B2, or B3 license. MASTER EVERY MODULE WITH OUR MASSIVE QUESTION BANK Tired of outdated materials? Our question pool contains nearly 10,000 questions, precisely authored by experts and continuously updated for the latest 2025 EASA syllabus. From Module 1 (Mathematics) to Module 17 (Propeller), we've got you covered. STUDY SMARTER, NOT HARDER WITH INTELLIGENT ANALYTICS Don't just study. Strategize. After every mock exam, get an instant, detailed breakdown of your performance. Pinpoint your weakest sub-modules, track your progress over time, and focus your efforts where they matter most. Watch your trend line go up! FEEL THE REAL EXAM PRESSURE (WITHOUT THE RISK) Our timed mock exams perfectly simulate the real EASA test environment. Build your confidence, master your time management, and eliminate exam-day anxiety. Walk into the test center knowing you're fully prepared. CONQUER B2 AVIONICS We know the unique challenges of the B2 stream. That's why our content includes a dedicated, in-depth focus on complex avionics modules, with questions you won't find anywhere else. UNLOCK YOUR POTENTIAL WITH PART-66 PRO Upgrade to a Pro subscription to get unlimited access to the ultimate study toolkit: Unlock All 17 Modules: Get complete access to our entire question database. Detailed Performance Dashboard: Visualize your progress with stats on your overall average, study streak, total study time, and more. Pinpoint Your Weaknesses: Our post-exam analysis shows you exactly which subtopics you need to review, so you can study smarter, not harder. Unlimited Practice: Take as many exams and study sessions as you need to feel 100% confident. Track Official Results: Log your official exam scores and completion dates to keep a clear record of your certification journey. Subscription Information: Payment will be charged to your Apple ID Account at confirmation of purchase. Subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase. Your career as a certified Aircraft Maintenance Engineer is just one download away. Stop leaving it to chance. Download now and secure your pass. Before downloading read: EULA (Terms and Conditions) : https://part66.tabbythecat.com/terms Privacy Policy: https://part66.tabbythecat.com/privacy Support: https://part66.tabbythecat.com/support
Screenshots
Verdict
The clearest difference is iOS requirement: Part66 at 10.3 against Part's 18.5. On price, update cadence, ads and in-app purchases 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. Part66 sells 11 one-off in-app purchases and Part sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 30, 2026 and October 11, 2026 respectively.
| Parameter | Part66 | Part |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (10 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10.3 — better | 18.5 |
| Further details — not scored | ||
| Size | 38 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | DAVID SOUTHERN | Selcuk Dolapci |
In-app purchases
Part66
- Module 10 Exam 2$0.99
- module 10 Exam 3$0.99
- Module 15 Exam 2$0.99
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- Module 7 Exam 2$0.99
- Module 8 Exam 2$0.99
- Module 8 Exam 3$0.99
- Module 8 Bank = 409 Questions.$7.99
- Module 17 Full Bank = 614 Q$8.99
- Module 10 Bank. 730 Questions.$10.99
- Module 15 Full Bank = 1,129 Q$11.99
- Module 7 Bank = 1,624 Question$11.99
Part
- Pro (Monthly)$8.991 Month
- Pro (Yearly)$89.991 Year







