Part66 vs Cockpit App Systems
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.
Cockpit App Systems
This app provides a comprehensive study tool for pilots, focusing on aircraft cockpit systems and procedures. It offers interactive learning for lights and switches, along with customizable flow procedures that can be shared and accessed via the cloud. Users can test their knowledge and access detailed information on hundreds of buttons and switches.
- Interactive lights and switches study
- Editable and shareable flow procedures
- Cloud synchronization for flows
- Information on 300+ buttons and switches
- User-created flow sharing
- Switch-related questions for some aircraft
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A320 B737NG E170 CRJ200 available for purchase within one app! Try before you buy! Designed for both the iPad, and iPhone, by professional pilots, instructors and check airman. The app is a "lights and switches" study tool supplemented with editable flows. Flows: - Study, review, test, and record flows. - Upload your flows to our cloud. Share them across your devices. - Find flows by other users. Note: Flows are user created only! Newly released airplane types might only have placeholder flows. Light & Switches: - Information about 300+ buttons and switches only a tap away. Other Features: - Some airplane types have questions about switches. Note: Newly released types might not.
Screenshots
Verdict
The clearest difference is rating: Cockpit App Systems at 4.8 against Part66's 4.5. Cockpit App Systems also leads on ratings volume (495 vs 10). Part66's advantage is iOS requirement (10.3 vs 15.0). On price, review sentiment, update cadence and ads 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 Cockpit App Systems sells 15 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Cockpit App Systems holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Cockpit App Systems has 495 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 60% of Part66's written reviews are positive against 63% of Cockpit App Systems's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 30, 2026 and October 6, 2026 respectively.
| Parameter | Part66 | Cockpit App Systems |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (10 ratings) | 4.8 (495 ratings) — better |
| Positive reviews | 60.0% of reviews | 63.0% of reviews — better |
| Number of ratings | 10 | 495 — better |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.3 — better | 15.0 |
| Further details — not scored | ||
| Size | 38 MB | 59 MB |
| Age rating | 4+ | 9+ |
| Developer | DAVID SOUTHERN | K2K Soft, LLC |
Customer experience
Part66
Cockpit App Systems
Bugs and requests
Part66
Not enough reviews yet to summarise bugs or requests.
Cockpit App Systems
Reported bugs
7 issues- App crashes after updates and won't open
- Settings and study menus display blank items
- Full version purchase doesn't unlock features
- Trial activation requires in-app purchase despite free claim
- App stops working after approximately one month of purchase
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- Inconsistent functionality across iOS versions
- Paid content not accessible after payment
Requested features
14 requests- French language version or automatic translation feature
- B737 aircraft variant support
- Updated fuel panel for A321
- Additional overhead panel items (data link, maintenance panel)
- Multiple selectable systems in System Display
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- Resizable rectangles for flow testing instead of fixed circles
- Disable automatic zoom on switch interactions
- Edit function for button/item location selection
- Character counter for flow creation
- More detailed switch information and descriptions
- Correct IR modes (FAULT, ALIGN instead of OFF, FAULT)
- Airline-specific flow accuracy (DAL flows mentioned)
- ECAM pages readable alongside other content
- Better text formatting and indentation for note clarity
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
Cockpit App Systems
- Full Access (Free)Free
- TrialFree
- Promotional Free AccessFree
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- Access to Descriptions$19.99
- A320 One Time Promotion$19.99
- Access to Flashcards$24.99
- Access to Flows$24.99
- CRJ200 Full Access$49.99
- CRJ200 Promo$49.99
- B737NG Full Access$49.99
- B737NG Promo$49.99
- Full Access$49.99
- E170 Full Access$49.99
- E170 Promo$49.99
- App-wide FUll Access$200.00
Questions
Is Part66 free?
Is Cockpit App Systems free?
Which has better reviews, Part66 or Cockpit App Systems?
Do Part66 or Cockpit App Systems have ads?
Which is updated more often, Part66 or Cockpit App Systems?
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