# Dr course vs Sono Master

The clearest difference is update cadence: Dr course at every 3 days against Sono Master's every 2 months. Sono Master's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Dr course ships an update every 3 days, Sono Master every 2 months. The most recent releases landed on September 28, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Dr course | Sono Master |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 months |
| Size | 64 MB | 42 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Mohamed Hussein](https://appshunter.io/developer/1651112667) | [Qeema Tech](https://appshunter.io/developer/1712478903) |

## What reviewers say

### Dr course

[App page](https://appshunter.io/ios/app/dr-course/id6443969611)

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

**In-app purchases:** none


### Sono Master

[App page](https://appshunter.io/ios/app/sono-master/id6466739235)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Dr course free?

Dr course is free to download, with no in-app purchases.

### Is Sono Master free?

Sono Master is free to download, with no in-app purchases.

### Do Dr course or Sono Master have ads?

Neither Dr course nor Sono Master shows ads.

### Which is updated more often, Dr course or Sono Master?

Dr course ships an update every 3 days, and Sono Master every 2 months. Most recently, Dr course was updated on September 28, 2026 and Sono Master on September 10, 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.*