# WSPM vs So Smooth X

The clearest difference is in-app purchases: WSPM at none against So Smooth X's 2. WSPM also leads on iOS requirement (13.0 vs 15.0). So Smooth X's advantage is device support. On price there is nothing between them.

Both are free to download. So Smooth X sells 2 in-app purchases, starting at $19.99 per year. WSPM asks for nothing beyond the download.

## The numbers

| Metric | WSPM | So Smooth X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/so-smooth-x/id6771631701/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 2 days |
| Monetization | — | Free |
| Size | 28 MB | 191 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [SpiltMilk LLC](https://appshunter.io/developer/1540114697) | [Jarel Posey](https://appshunter.io/developer/6771631703) |

## What reviewers say

### WSPM

[App page](https://appshunter.io/ios/app/wspm-db/id6479663934)

**In-app purchases:** none


### So Smooth X

[App page](https://appshunter.io/ios/app/so-smooth-x/id6771631701)

Experience a 24/7 stream of smooth jazz, featuring exclusive artist premieres and AI-powered hosts. Enjoy high-quality audio, background playback, and personalized content for any mood or activity.

**Highlights:** 24/7 smooth jazz radio, Exclusive artist premieres, AI DJ hosts, Background audio playback, High-quality streaming audio, Save and manage favorite content

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| So Smooth X Premium | $19.99 | per year |
| So Smooth X Premium | $19.99 | one-time |


## Frequently asked questions

### Is WSPM free?

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

### Is So Smooth X free?

So Smooth X is free to download, with in-app purchases available.

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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.*