# ECE Reviewer (PERCApp) vs Power Electronics

The clearest difference is ads: Power Electronics at none against ECE Reviewer (PERCApp)'s shown. ECE Reviewer (PERCApp)'s advantage is update cadence (every 3 weeks vs every 2 months) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

Both are free to download. ECE Reviewer (PERCApp) sells 11 one-off in-app purchases and Power Electronics sells 6 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ECE Reviewer (PERCApp) ships an update every 3 weeks, Power Electronics every 2 months. The most recent releases landed on October 1, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | ECE Reviewer (PERCApp) | Power Electronics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/power-electronics/id6737322555/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 203 MB | 22 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [PERCDC Learnhub Inc.](https://appshunter.io/developer/1270150019) | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) |

## What reviewers say

### ECE Reviewer (PERCApp)

[App page](https://appshunter.io/ios/app/ece-reviewer-percapp/id6596800930)

**Features:** macOS Compatibility

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1000 Percs | $0.99 | one-time |
| 2,500 Percs + Bonus 100 Percs | $0.99 | one-time |
| 5000 Percs + Bonus 500 Percs | $1.99 | one-time |
| 10000 Percs + Bonus 2000 Percs | $2.99 | one-time |
| 25000 Percs + Bonus 10000Percs | $7.99 | one-time |
| ELEX | $14.99 | one-time |
| GEAS | $14.99 | one-time |
| ESAT | $14.99 | one-time |
| 50000 Percs + Bonus 30000Percs | $14.99 | one-time |
| MATH | $19.99 | one-time |
| All Subjects | $59.99 | one-time |


### Power Electronics

[App page](https://appshunter.io/ios/app/power-electronics/id6737322555)

This quiz app covers over 70 topics in power electronics, including switches, drive circuits, regulators, and various electronic components. It's designed to help users master the subject through interactive learning.

**Highlights:** Over 70 power electronics topics, Covers switches, drive circuits, regulators, Detailed component listings, Interactive quiz format, Master power electronics concepts

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $9.99 | per month |
| 6 Months | $19.99 | per 6 months |
| 1 Year | $29.99 | per year |
| 1500 | $0.99 | one-time |
| 3500 | $1.99 | one-time |
| 9000 | $3.99 | one-time |


## Frequently asked questions

### Is ECE Reviewer (PERCApp) free?

ECE Reviewer (PERCApp) is free to download, with in-app purchases available.

### Is Power Electronics free?

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

### Do ECE Reviewer (PERCApp) or Power Electronics have ads?

ECE Reviewer (PERCApp) shows ads; Power Electronics does not.

### Which is updated more often, ECE Reviewer (PERCApp) or Power Electronics?

ECE Reviewer (PERCApp) ships an update every 3 weeks, and Power Electronics every 2 months. Most recently, ECE Reviewer (PERCApp) was updated on October 1, 2026 and Power Electronics on October 6, 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.*