# Sound Learning Lab ESL vs Learning OOP

The clearest difference is in-app purchases: Sound Learning Lab ESL at none against Learning OOP's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Learning OOP sells 4 one-off in-app purchases. Sound Learning Lab ESL asks for nothing beyond the download.

Sound Learning Lab ESL ships an update fortnightly, Learning OOP every 10 days. The most recent releases landed on October 4, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Sound Learning Lab ESL | Learning OOP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Size | 30 MB | 122 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gary Doolittle](https://appshunter.io/developer/1757161701) | [Airton Siqueira de Freitas](https://appshunter.io/developer/1809776051) |

## What reviewers say

### Sound Learning Lab ESL

[App page](https://appshunter.io/ios/app/sound-learning-lab-esl/id6761380618)

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

**In-app purchases:** none


### Learning OOP

[App page](https://appshunter.io/ios/app/learning-oop/id6776850297)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full access | $1.99 | one-time |
| Full access with discount | $1.99 | one-time |
| CERTIFICATE OF COMPLETION | $2.99 | one-time |
| FULL PASS ALL APP | $11.99 | one-time |


## Frequently asked questions

### Is Sound Learning Lab ESL free?

Sound Learning Lab ESL is free to download, with no in-app purchases.

### Is Learning OOP free?

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

### Do Sound Learning Lab ESL or Learning OOP have ads?

Neither Sound Learning Lab ESL nor Learning OOP shows ads.

### Which is updated more often, Sound Learning Lab ESL or Learning OOP?

Sound Learning Lab ESL ships an update fortnightly, and Learning OOP every 10 days. Most recently, Sound Learning Lab ESL was updated on October 4, 2026 and Learning OOP 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.*