# Part66 vs A320 CFDS Trainer Lite

The clearest difference is review sentiment: Part66 at 60% against A320 CFDS Trainer Lite's 25%. Part66 also leads on iOS requirement (10.3 vs 13.0). A320 CFDS Trainer Lite's advantage is in-app purchases (none vs 11). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Part66 sells 11 one-off in-app purchases. A320 CFDS Trainer Lite asks for nothing beyond the download.

Part66 ships an update every 2 months, A320 CFDS Trainer Lite every 3 months. The most recent releases landed on September 30, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Part66 | A320 CFDS Trainer Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (10 ratings)](https://appshunter.io/ios/app/part66-engineer/id889659306/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | **60.0% of reviews** | 25.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 38 MB | 69 MB |
| Requires iOS | **10.3** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DAVID SOUTHERN](https://appshunter.io/developer/889659309) | [ERM SIMS LLC](https://appshunter.io/developer/1697141250) |

## 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 |


### A320 CFDS Trainer Lite

[App page](https://appshunter.io/ios/app/a320-cfds-trainer-lite/id6451204364)

Master the A320 Centralized Fault Display System with this mobile maintenance training app. Practice fault reporting, navigate menus, and access reference pages from related systems. Designed by aviation experts for professionals, it offers offline functionality and an ad-free experience.

**Highlights:** Practice PFR creation, Navigate CFDS menus, Access Normal and Menu Modes, View static reference pages, Offline functionality, Ad-free learning

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Part66 free?

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

### Is A320 CFDS Trainer Lite free?

A320 CFDS Trainer Lite is free to download, with no in-app purchases.

### Do Part66 or A320 CFDS Trainer Lite have ads?

Neither Part66 nor A320 CFDS Trainer Lite shows ads.

### Which is updated more often, Part66 or A320 CFDS Trainer Lite?

Part66 ships an update every 2 months, and A320 CFDS Trainer Lite every 3 months. Most recently, Part66 was updated on September 30, 2026 and A320 CFDS Trainer Lite on September 26, 2026.

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