# E4Keys vs English Electrical Engineering

The clearest difference is ads: E4Keys at none against English Electrical Engineering's shown. English Electrical Engineering's advantage is update cadence (fortnightly vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. E4Keys sells 3 in-app purchases, starting at $1.99 per month and English Electrical Engineering sells 6 in-app purchases, starting at $8.49 per 7 days. Whichever you choose, the download price is not the number that matters.

E4Keys ships an update monthly, English Electrical Engineering fortnightly. The most recent releases landed on October 11, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | E4Keys | English Electrical Engineering |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.9 (7 ratings)](https://appshunter.io/ios/app/english-electrical-engineering/id6755091026/reviews)** |
| Number of ratings | — | **7** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 46 MB | 53 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CARLOS GOMES DE OLIVEIRA](https://appshunter.io/developer/1576926646) | [Nelly Latypova](https://appshunter.io/developer/1150816403) |

## What reviewers say

### E4Keys

[App page](https://appshunter.io/ios/app/e4keys/id1604234563)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Assinatura Mensal | $1.99 | per month |
| Assinatura Semestral | $9.99 | per 6 months |
| Assinatura Anual | $14.99 | per year |


### English Electrical Engineering

[App page](https://appshunter.io/ios/app/english-electrical-engineering/id6755091026)

Master essential English vocabulary for electrical engineering. This app uses flashcards and eight learning methods to help students and professionals understand technical terms for better communication and study. Track your progress and build confidence in specialized discussions.

**Highlights:** Technical vocabulary for electrical engineers, Flashcard learning method, Eight diverse word-learning techniques, Study progress tracking and statistics, Word tracking system, Covers control systems, power generation, electronics

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Electrical Vocabulary Pro | $8.49 | per 7 days |
| Technical Vocabulary Pro | $8.49 | per month |
| Technical Vocabulary Pro | $9.49 | per month |
| Engineering Terminology Pro | $29.99 | per 3 months |
| Pro Complete Technical Terms | $34.99 | per year |
| Pro Complete Technical Terms | $34.99 | per year |


## Frequently asked questions

### Is E4Keys free?

E4Keys is free to download, with in-app purchases available.

### Is English Electrical Engineering free?

English Electrical Engineering is free to download, with in-app purchases available.

### Do E4Keys or English Electrical Engineering have ads?

English Electrical Engineering shows ads; E4Keys does not.

### Which is updated more often, E4Keys or English Electrical Engineering?

E4Keys ships an update monthly, and English Electrical Engineering fortnightly. Most recently, E4Keys was updated on October 11, 2026 and English Electrical Engineering on October 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.*