# CastFlow vs Lenna

The clearest difference is price: Lenna at Free against CastFlow's $0.99. Lenna also leads on rating (4.9 vs 3.0) and update cadence (every 3 weeks vs every 26 months). CastFlow's advantage is in-app purchases (none vs 3). On ads and device support there is nothing between them.

Lenna is free to download; CastFlow costs $0.99 up front. Lenna sells 3 one-off in-app purchases. CastFlow asks for nothing beyond the download.

Lenna holds the better App Store score, 4.9 against 3.0. That said, the two scores are not equally well evidenced: Lenna has 118 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 83% of CastFlow's written reviews are positive against 98% of Lenna's.

CastFlow ships an update every 26 months, Lenna every 3 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CastFlow | Lenna |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.0 (8 ratings)](https://appshunter.io/ios/app/castflow/id6448221325/reviews) | **[4.9 (118 ratings)](https://appshunter.io/ios/app/lenna-video-library-player/id6502967807/reviews)** |
| Number of ratings | 8 | **118** |
| Positive reviews | 83.3% of reviews | **98.2% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 75 MB | 101 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad, Mac, Apple TV | iPhone, iPad, iPod, Apple TV |
| Age rating | 4+ | 4+ |
| Developer | [辉 邓](https://appshunter.io/developer/1683717989) | [佳琦 王](https://appshunter.io/developer/1733384420) |

## What reviewers say

### CastFlow

[App page](https://appshunter.io/ios/app/castflow/id6448221325)

Stream media from various platforms to your device using DLNA protocol. Supports a wide range of media formats for seamless playback.

**Highlights:** DLNA streaming, Cross-device casting, Wide media format support, Seamless playback

**Features:** Vision Pro support

**In-app purchases:** none


### Lenna

[App page](https://appshunter.io/ios/app/lenna-video-library-player/id6502967807)

A media player for movie and TV enthusiasts, ideal for users with home NAS storage. It connects to Emby/Jellyfin servers and plays directly from WebDAV/SMB. Enjoy high-quality playback with HDR support, library management, and seamless syncing.

**Highlights:** Connects to Emby, Jellyfin, WebDAV, SMB, Browse poster walls and search media, Background and PiP playback, Adjustable playback speed, 4K, HDR, DolbyVision support, iCloud and Trakt.TV sync, DLNA casting

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A Cup of Coffee | $1.99 | one-time |
| A Deluxe Dessert | $4.99 | one-time |
| A Big Meal | $14.99 | one-time |

**What reviewers like**

- 👍 Excellent and free app
- 🚀 Seamless Emby/Jellyfin connection
- ✨ High quality for free
- 🌟 User-friendly interface
- 💯 Highly recommended

**What reviewers complain about**

- 🐛 Audio/video sync issues
- 🐛 Dolby vision green screen
- 🐛 Subtitles not loading
- 🐛 Multi-season display issue
- 🐛 Playback buffering problems

**Reported bugs**

- Audio and video out of sync after pausing and returning to app
- Subtitles and video out of sync after pausing for a while
- Dolby Vision playback shows a green screen
- Cannot load RST subtitles from Emby
- Some MP4 videos report 'avformat can't open input|Protocol not found'

**Requested features**

- Add playback history tab
- Implement scraping and poster wall
- Add screen-off casting
- Support IPTV remote subscription (txt/m3u)
- Add gesture switch toggle


## Frequently asked questions

### Is CastFlow free?

CastFlow costs $0.99, with no in-app purchases.

### Is Lenna free?

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

### Which has better reviews, CastFlow or Lenna?

Lenna is rated higher. CastFlow averages 3.0 out of 5 from 8 ratings, while Lenna averages 4.9 from 118 ratings.

### Do CastFlow or Lenna have ads?

Neither CastFlow nor Lenna shows ads.

### Which is updated more often, CastFlow or Lenna?

CastFlow ships an update every 26 months, and Lenna every 3 weeks. Most recently, CastFlow was updated on October 27, 2026 and Lenna on October 24, 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.*