# Screen Mirroring ® vs CastDuo

The clearest difference is in-app purchases: Screen Mirroring ® at none against CastDuo's 15. Screen Mirroring ® also leads on ratings volume (2.6K vs 103) and review sentiment (34% vs 20%). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. CastDuo sells 15 in-app purchases, starting at $2.49 per 7 days. Screen Mirroring ® asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.9 for Screen Mirroring ® against 4.0 for CastDuo. That said, the two scores are not equally well evidenced: Screen Mirroring ® has 2.6K ratings behind it against 103, so its average is the more settled of the two. Written reviews are what separate them: 34% of Screen Mirroring ®'s written reviews are positive against 20% of CastDuo's.

Screen Mirroring ® ships an update every 2 weeks, CastDuo every 8 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | Screen Mirroring ® | CastDuo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (2.6K ratings)](https://appshunter.io/ios/app/screen-mirroring/id1562981055/reviews) | **[4.0 (103 ratings)](https://appshunter.io/ios/app/castduo-screen-mirroring-app/id6593663296/reviews)** |
| Number of ratings | **2.6K** | 103 |
| Positive reviews | **33.6% of reviews** | 20.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 8 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 68 MB | 66 MB |
| Requires iOS | **13.4** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Zap Software Studio BV](https://appshunter.io/developer/1793745371) | [ECO MOBILE JOINT STOCK COMPANY](https://appshunter.io/developer/1609177811) |

## What reviewers say

### Screen Mirroring ®

[App page](https://appshunter.io/ios/app/screen-mirroring/id1562981055)

Seamlessly mirror your phone's screen to your Smart TV with zero delay. Cast photos and videos directly from your device's camera roll. No extra hardware is required for this universal solution.

**Highlights:** Zero-delay screen mirroring, Cast photos and videos, No additional hardware needed, Universal TV compatibility

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

**In-app purchases:** none

**What reviewers like**

- ⭐ Excellent performance
- 🆓 Free and no ads
- 📺 Works with various TVs
- 🔍 Easy to use and connect

**What reviewers complain about**

- 🔌 Frequent disconnections
- ⏱️ Noticeable lag and delay
- 🐛 Compatibility issues with some devices
- 📽️ Poor video quality

**Reported bugs**

- App crashes or freezes
- Unable to find or connect to TV
- Mirroring stops working after a few minutes

**Requested features**

- Improve video quality and reduce latency
- Add support for more TV brands and models
- Provide better stability and reduce disconnections


### 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 (15)**

| 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 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 |


## Frequently asked questions

### Is Screen Mirroring ® free?

Screen Mirroring ® is free to download, with no in-app purchases.

### Is CastDuo free?

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

### Which has better reviews, Screen Mirroring ® or CastDuo?

CastDuo is rated higher. Screen Mirroring ® averages 3.9 out of 5 from 2.6K ratings, while CastDuo averages 4.0 from 103 ratings.

### Do Screen Mirroring ® or CastDuo have ads?

Both Screen Mirroring ® and CastDuo show ads.

### Which is updated more often, Screen Mirroring ® or CastDuo?

Screen Mirroring ® ships an update every 2 weeks, and CastDuo every 8 days. Most recently, Screen Mirroring ® was updated on October 30, 2026 and CastDuo on October 30, 2026.

---

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