# Learn English By Listening + vs API Inspector Cert Prep

The clearest difference is ads: API Inspector Cert Prep at none against Learn English By Listening +'s shown. Learn English By Listening +'s advantage is update cadence (monthly vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Learn English By Listening + sells 1 one-off in-app purchase and API Inspector Cert Prep sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Learn English By Listening + ships an update monthly, API Inspector Cert Prep every 3 months. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Learn English By Listening + | API Inspector Cert Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (138 ratings)](https://appshunter.io/ios/app/learn-english-by-listening-plus/id1513976944/reviews)** | — |
| Number of ratings | **138** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 91 MB | 32 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thanh Vu Truong](https://appshunter.io/developer/563428916) | [Simon Shih](https://appshunter.io/developer/1870707682) |

## What reviewers say

### Learn English By Listening +

[App page](https://appshunter.io/ios/app/learn-english-by-listening-plus/id1513976944)

Enhance your English listening comprehension with a vast library of articles and audio tracks. Practice at your own pace with content covering everyday topics, from basic to advanced levels. Make language learning engaging and practical, whether at home or on the go.

**Highlights:** 1500+ articles and audio tracks, Practice at your own pace, Content from basic to advanced levels, Daily life topics covered, Improves listening and speaking skills, Convenient for on-the-go learning

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


### API Inspector Cert Prep

[App page](https://appshunter.io/ios/app/api-inspector-cert-prep/id6785875538)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| API 510 – Pressure Vessel Inspector | $19.99 | one-time |
| API 570 – Piping Inspector | $19.99 | one-time |
| API 653 – Storage Tank Inspector | $19.99 | one-time |


## Frequently asked questions

### Is Learn English By Listening + free?

Learn English By Listening + is free to download, with in-app purchases available.

### Is API Inspector Cert Prep free?

API Inspector Cert Prep is free to download, with in-app purchases available.

### Do Learn English By Listening + or API Inspector Cert Prep have ads?

Learn English By Listening + shows ads; API Inspector Cert Prep does not.

### Which is updated more often, Learn English By Listening + or API Inspector Cert Prep?

Learn English By Listening + ships an update monthly, and API Inspector Cert Prep every 3 months. Most recently, Learn English By Listening + was updated on November 3, 2026 and API Inspector Cert Prep on October 31, 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.*