# CastDuo vs RDbox PRO

The clearest difference is in-app purchases: RDbox PRO at none against CastDuo's 15. RDbox PRO also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. CastDuo sells 14 in-app purchases, starting at $2.49 per 7 days. RDbox PRO asks for nothing beyond the download.

## The numbers

| Metric | CastDuo | RDbox PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (100 ratings)](https://appshunter.io/ios/app/castduo-screen-mirroring-app/id6593663296/reviews)** | — |
| Number of ratings | **100** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 8 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 66 MB | 9 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [ECO MOBILE JOINT STOCK COMPANY](https://appshunter.io/developer/1609177811) | [HUMITAT-STOP S.L.](https://appshunter.io/developer/1622669309) |

## What reviewers say

### CastDuo

[App page](https://appshunter.io/ios/app/castduo-screen-mirroring-app/id6593663296)

Transform your phone into a big-screen experience by wirelessly casting photos, videos, and web content to your smart TV. Enjoy seamless, lag-free mirroring for entertainment, presentations, or gaming.

**Highlights:** Seamless photo, video, and music casting, Zero-delay screen mirroring, Direct web video streaming, Effortless smart TV connectivity, Lag-free performance, High-definition playback

**Features:** macOS Compatibility

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Smart Cast Subscription | $2.49 | per 7 days |
| Weekly Mirroring Discount | $3.49 | per 7 days |
| Weekly Mirroring Subscription | $4.99 | per 7 days |
| Weekly Smart Cast Subscription | $5.99 | per 7 days |
| Weekly Mirroring Subscription | $6.99 | per 7 days |
| Yearly Mirroring Subscription | $12.49 | per year |
| Monhtly SmartCast Subscription | $12.99 | per month |
| Yearly Subscription Discount | $19.99 | per year |
| Yearly Mirroring Subscription | $29.99 | per year |
| Yearly Subscription | $49.99 | per year |
| Yearly Subscription | $59.99 | per year |
| Lifetime Smart Cast | $18.99 | one-time |
| Onetime payment special offer | $29.99 | one-time |
| Lifetime Smart Cast | $34.99 | one-time |


### RDbox PRO

[App page](https://appshunter.io/ios/app/rdbox-pro/id6763396738)

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

**In-app purchases:** none


## Frequently asked questions

### Is CastDuo free?

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

### Is RDbox PRO free?

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

### Do CastDuo or RDbox PRO have ads?

CastDuo shows ads; RDbox PRO does not.

---

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