# Casterly vs InteroCast

The clearest difference is iOS requirement: InteroCast at 15.1 against Casterly's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Casterly sells 1 in-app purchase, starting at $9.99 per year and InteroCast sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Casterly ships an update fortnightly, InteroCast every 2 weeks. The most recent releases landed on September 14, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Casterly | InteroCast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/interocast/id6763614257/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 9 MB | 38 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Sodium Studio, LLC](https://appshunter.io/developer/1887896668) | [Seud.IO](https://appshunter.io/developer/1895395158) |

## What reviewers say

### Casterly

[App page](https://appshunter.io/ios/app/casterly/id6761127451)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Casterly Pro | $9.99 | per year |


### InteroCast

[App page](https://appshunter.io/ios/app/interocast/id6763614257)

A private podcast player that runs entirely on your device. Enjoy features like offline listening, customizable queues, and AI-powered transcripts and summaries. Your data stays with you, with no tracking or accounts.

**Highlights:** On-device podcast playback, No account or tracking, AI-powered transcripts and summaries, Offline episode downloads, Customizable playback queue, CarPlay and Home Screen widget support, Shareable transcript clippings

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small tip | $1.99 | one-time |
| Generous Tip | $4.99 | one-time |
| Big Tip | $9.99 | one-time |


## Frequently asked questions

### Is Casterly free?

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

### Is InteroCast free?

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

### Do Casterly or InteroCast have ads?

Neither Casterly nor InteroCast shows ads.

### Which is updated more often, Casterly or InteroCast?

Casterly ships an update fortnightly, and InteroCast every 2 weeks. Most recently, Casterly was updated on September 14, 2026 and InteroCast 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.*