# PrepFE vs Electrical Systems Visual Lab

The clearest difference is price: PrepFE at Free against Electrical Systems Visual Lab's $1.99. PrepFE also leads on iOS requirement (13.0 vs 17.0). Electrical Systems Visual Lab's advantage is in-app purchases (none vs 6) and update cadence (fortnightly vs every 36 months). On ads and device support there is nothing between them.

PrepFE is free to download; Electrical Systems Visual Lab costs $1.99 up front. PrepFE sells 6 one-off in-app purchases. Electrical Systems Visual Lab asks for nothing beyond the download.

PrepFE ships an update every 36 months, Electrical Systems Visual Lab fortnightly. The most recent releases landed on August 30, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | PrepFE | Electrical Systems Visual Lab |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[2.6 (8 ratings)](https://appshunter.io/ios/app/prepfe-electrical-and-computer/id1519333024/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 36 months | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 288 MB | 131 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PrepFE, Inc.](https://appshunter.io/developer/1499557437) | [Yuhsiu Lai](https://appshunter.io/developer/433114647) |

## What reviewers say

### PrepFE

[App page](https://appshunter.io/ios/app/prepfe-electrical-and-computer/id1519333024)

Prepare for your FE exam with practice problems and flashcards. Learn by doing with expert-curated content, track your progress, and identify areas for improvement. Study anytime, anywhere with this mobile resource.

**Highlights:** Practice FE exam questions, Interactive practice exams, Hundreds of practice questions, Detailed step-by-step explanations, Flashcards for key concepts, Progress tracking and weakness analysis, Updated content for new specifications

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Access Renewal | $47.99 | one-time |
| 1 Month Access | $59.99 | one-time |
| 3 Months Access Renewal | $61.99 | one-time |
| 6 Months Access Renewal | $75.99 | one-time |
| 3 Months Access | $79.99 | one-time |
| 6 Months Access | $99.99 | one-time |


### Electrical Systems Visual Lab

[App page](https://appshunter.io/ios/app/electrical-systems-visual-lab/id6765833174)

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

**In-app purchases:** none


## Frequently asked questions

### Is PrepFE free?

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

### Is Electrical Systems Visual Lab free?

Electrical Systems Visual Lab costs $1.99, with no in-app purchases.

### Do PrepFE or Electrical Systems Visual Lab have ads?

Neither PrepFE nor Electrical Systems Visual Lab shows ads.

### Which is updated more often, PrepFE or Electrical Systems Visual Lab?

PrepFE ships an update every 36 months, and Electrical Systems Visual Lab fortnightly. Most recently, PrepFE was updated on August 30, 2026 and Electrical Systems Visual Lab on September 15, 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.*