# RSSRadio vs Castro

The clearest difference is in-app purchases: Castro at none against RSSRadio's 1. Castro also leads on iOS requirement (15.1 vs 17.0). RSSRadio's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. RSSRadio sells 1 one-off in-app purchase. Castro asks for nothing beyond the download.

RSSRadio ships an update every 4 months, Castro every 2 months. The most recent releases landed on October 1, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | RSSRadio | Castro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 37 MB | 146 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Mitsuhiro Hashimoto](https://appshunter.io/developer/509482512) | [Sahara AI](https://appshunter.io/developer/1883008011) |

## What reviewers say

### RSSRadio

[App page](https://appshunter.io/ios/app/rssradio/id6758008388)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | one-time |


### Castro

[App page](https://appshunter.io/ios/app/castro/id6760182140)

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

**In-app purchases:** none


## Frequently asked questions

### Is RSSRadio free?

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

### Is Castro free?

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

### Do RSSRadio or Castro have ads?

Castro shows ads; RSSRadio does not.

### Which is updated more often, RSSRadio or Castro?

RSSRadio ships an update every 4 months, and Castro every 2 months. Most recently, RSSRadio was updated on October 1, 2026 and Castro on October 3, 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.*