# Part66 vs Cockpit App Systems

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.

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.

## The numbers

| Metric | Part66 | Cockpit App Systems |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (10 ratings)](https://appshunter.io/ios/app/part66-engineer/id889659306/reviews) | **[4.8 (495 ratings)](https://appshunter.io/ios/app/cockpit-app-systems/id1164554980/reviews)** |
| Number of ratings | 10 | **495** |
| Positive reviews | 60.0% of reviews | **63.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 38 MB | 59 MB |
| Requires iOS | **10.3** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [DAVID SOUTHERN](https://appshunter.io/developer/889659309) | [K2K Soft, LLC](https://appshunter.io/developer/1163633626) |

## What reviewers say

### Part66

[App page](https://appshunter.io/ios/app/part66-engineer/id889659306)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Module 10 Exam 2 | $0.99 | one-time |
| module 10 Exam 3 | $0.99 | one-time |
| Module 15 Exam 2 | $0.99 | one-time |
| Module 7 Exam 2 | $0.99 | one-time |
| Module 8 Exam 2 | $0.99 | one-time |
| Module 8 Exam 3 | $0.99 | one-time |
| Module 8 Bank = 409 Questions. | $7.99 | one-time |
| Module 17 Full Bank = 614 Q | $8.99 | one-time |
| Module 10 Bank. 730 Questions. | $10.99 | one-time |
| Module 15 Full Bank = 1,129 Q | $11.99 | one-time |
| Module 7 Bank = 1,624 Question | $11.99 | one-time |


### Cockpit App Systems

[App page](https://appshunter.io/ios/app/cockpit-app-systems/id1164554980)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access (Free) | Free | one-time |
| Trial | Free | one-time |
| Promotional Free Access | Free | one-time |
| Access to Descriptions | $19.99 | one-time |
| A320 One Time Promotion | $19.99 | one-time |
| Access to Flashcards | $24.99 | one-time |
| Access to Flows | $24.99 | one-time |
| CRJ200 Full Access | $49.99 | one-time |
| CRJ200 Promo | $49.99 | one-time |
| B737NG Full Access | $49.99 | one-time |
| B737NG Promo | $49.99 | one-time |
| Full Access | $49.99 | one-time |
| E170 Full Access | $49.99 | one-time |
| E170 Promo | $49.99 | one-time |
| App-wide FUll Access | $200.00 | one-time |

**What reviewers like**

- 👍 Comprehensive A320 systems and cockpit learning tool
- 📚 Extensive flashcard database with airline-specific study guides
- ✈️ Customizable flows for different airline SOPs
- 🎓 Helpful for type rating and recurrent training preparation
- 📖 Detailed switch and system information

**What reviewers complain about**

- 💰 High pricing ($39-$45) for full access
- 🔐 Misleading free-to-download model with paywall
- ❌ Limited free version (only electrical panel accessible)
- 🖼️ Static image-based interface without interactive button functionality
- 🎨 Basic and unintuitive UI design

**Reported bugs**

- 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

**Requested features**

- 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


## Frequently asked questions

### Is Part66 free?

Part66 is free to download, with in-app purchases available.

### Is Cockpit App Systems free?

Cockpit App Systems is free to download, with in-app purchases available.

### Which has better reviews, Part66 or Cockpit App Systems?

Cockpit App Systems is rated higher. Part66 averages 4.5 out of 5 from 10 ratings, while Cockpit App Systems averages 4.8 from 495 ratings.

### Do Part66 or Cockpit App Systems have ads?

Neither Part66 nor Cockpit App Systems shows ads.

### Which is updated more often, Part66 or Cockpit App Systems?

Part66 ships an update every 2 months, and Cockpit App Systems every 2 months. Most recently, Part66 was updated on September 30, 2026 and Cockpit App Systems on October 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*