# ClasSong vs Registered Electrical Worker

The clearest difference is iOS requirement: Registered Electrical Worker at 15.6 against ClasSong's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. ClasSong sells 8 in-app purchases, starting at $4.49 per 7 days and Registered Electrical Worker sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ClasSong ships an update every 4 days, Registered Electrical Worker every 2 days. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | ClasSong | Registered Electrical Worker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 30 MB | 75 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Cihan Alison](https://appshunter.io/developer/1834164853) | [Pickmy AI](https://appshunter.io/developer/1869516043) |

## What reviewers say

### ClasSong

[App page](https://appshunter.io/ios/app/classong-learn-with-songs/id6815927986)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly 10 Song Credits | $4.49 | per 7 days |
| Monthly 40 Song Credits | $16.49 | per month |
| Family Space | $1.00 | one-time |
| 20 Song Credits | $9.99 | one-time |
| 50 Song Credits | $22.99 | one-time |
| 100 Song Credits | $44.99 | one-time |
| 500 Song Credits | $214.99 | one-time |
| 1000 Song Credits | $419.99 | one-time |


### Registered Electrical Worker

[App page](https://appshunter.io/ios/app/registered-electrical-worker/id6816395453)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 90-day Pro Offer | $19.99 | one-time |
| Pro 90 Days | $22.99 | one-time |


## Frequently asked questions

### Is ClasSong free?

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

### Is Registered Electrical Worker free?

Registered Electrical Worker is free to download, with in-app purchases available.

### Do ClasSong or Registered Electrical Worker have ads?

Neither ClasSong nor Registered Electrical Worker shows ads.

### Which is updated more often, ClasSong or Registered Electrical Worker?

ClasSong ships an update every 4 days, and Registered Electrical Worker every 2 days. Most recently, ClasSong was updated on October 26, 2026 and Registered Electrical Worker on October 29, 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.*