# ProDio vs HSK Master

The clearest difference is ads: ProDio at none against HSK Master's shown. HSK Master's advantage is update cadence (every 2 days vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. ProDio sells 15 one-off in-app purchases and HSK Master sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ProDio ships an update every 2 months, HSK Master every 2 days. The most recent releases landed on September 7, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | ProDio | HSK Master |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 39 MB | 28 MB |
| Requires iOS | 13.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ProDio Audio Learning Inc.](https://appshunter.io/developer/1281913516) | [JIHUN JO](https://appshunter.io/developer/1855392770) |

## What reviewers say

### ProDio

[App page](https://appshunter.io/ios/app/prodio/id1281913517)

**Features:** macOS Compatibility

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mortgage Essentials | $6.99 | one-time |
| REALTOR® Safety Tips | $29.99 | one-time |
| CPA Skills AI Can't Beat | $39.99 | one-time |
| Conflicts of Interest Unpacked | $42.99 | one-time |
| Acing your Strategy | $54.99 | one-time |
| Conflict Management | $54.99 | one-time |
| Conflict Management USA | $54.99 | one-time |
| Intercultural Leadership USA | $59.99 | one-time |
| Real Estate Bundle | $59.99 | one-time |
| Focus on Change | $64.99 | one-time |
| Talent MAGNET | $64.99 | one-time |
| Intercultural Leadership | $79.99 | one-time |
| Leading Change Bundle | $124.99 | one-time |
| Canadian Accounting Ethics | $139.99 | one-time |
| Leadership Power Skills Bundle | $139.99 | one-time |


### HSK Master

[App page](https://appshunter.io/ios/app/hsk-master/id6756893592)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is ProDio free?

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

### Is HSK Master free?

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

### Do ProDio or HSK Master have ads?

HSK Master shows ads; ProDio does not.

### Which is updated more often, ProDio or HSK Master?

ProDio ships an update every 2 months, and HSK Master every 2 days. Most recently, ProDio was updated on September 7, 2026 and HSK Master on September 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.*