# radio.sydney vs So Smooth X

The clearest difference is in-app purchases: radio.sydney at none against So Smooth X's 2. radio.sydney also leads on iOS requirement (13.0 vs 15.0). So Smooth X's advantage is update cadence (every 2 days vs every 34 months). On price, ads and device support there is nothing between them.

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

radio.sydney ships an update every 34 months, So Smooth X every 2 days. Both last shipped on October 5, 2026.

## The numbers

| Metric | radio.sydney | 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 | No |
| Update frequency | Every 34 months | **Every 2 days** |
| Monetization | — | Free |
| Size | 11 MB | 191 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Max Turner](https://appshunter.io/developer/1237364033) | [Jarel Posey](https://appshunter.io/developer/6771631703) |

## What reviewers say

### radio.sydney

[App page](https://appshunter.io/ios/app/radiosydney/id1237364034)

**Features:** macOS Compatibility

**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 radio.sydney free?

radio.sydney 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.

### Do radio.sydney or So Smooth X have ads?

Neither radio.sydney nor So Smooth X shows ads.

### Which is updated more often, radio.sydney or So Smooth X?

radio.sydney ships an update every 34 months, and So Smooth X every 2 days. Most recently, radio.sydney was updated on October 5, 2026 and So Smooth X on October 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*