CastFlow vs Lenna
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CastFlow
Stream media from various platforms to your device using DLNA protocol. Supports a wide range of media formats for seamless playback.
- DLNA streaming
- Cross-device casting
- Wide media format support
- Seamless playback
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CastFlow is a family-friendly home media hub that spans iPhone, iPad, Mac and Apple TV. Cast from your phone, stream IPTV, browse Jellyfin, or open files on your NAS — all on your own network, no account needed. Cast anything to the living room Turn CastFlow into a DLNA / UPnP receiver. Push a video, a song, or a photo from any phone, tablet, PC or NAS with one tap and it lands on the big screen. IPTV that feels like TV Import M3U playlists or Xtream Codes accounts. Browse categories, follow the EPG, and enjoy time‑shifted playback in a clean, native player. Jellyfin & Emby, feel‑native Sign in once and get Continue Watching, Recently Added, seasons, episodes, and multi‑audio / multi‑subtitle tracks. It behaves like a first‑party client, not a browser wrapper. SMB & WebDAV Connect directly to your NAS, home server, or WebDAV drive. Browse folders, preview posters, and play files without preloading or transcoding. Danmaku overlay Turn on scrolling live‑comment overlays for supported casting sources — perfect for anime nights and shared watch parties. MPV‑powered playback Hardware decoding for H.264, HEVC and AV1. Full support for SRT, ASS/SSA and PGS subtitles, external audio tracks, per‑track speed and pitch control. Continue Watching, everywhere Resume points sync across sources and devices, so you can jump from the couch to the bedroom without losing your spot. Local‑first, private by default No account. No cloud database. No tracking. CastFlow does not upload your library metadata anywhere. Your media stays on your local network. One app across the family iPhone, iPad, Mac and Apple TV — add a source once and it's ready on every device. CastFlow adapts to each screen: a receiver on the TV, a browser on your Mac, a remote in your pocket. Made for – NAS owners who want their library on every screen – IPTV fans who want a clean native player instead of a browser tab – Cord‑cutters running Jellyfin or Emby at home – Anyone who wants phone, computer and NAS content to just appear on the Apple TV Add a source, hit play, and let the media flow. Support: https://tinuv.me/castflow/ Privacy: https://tinuv.me/castflow/privacy.html
Lenna
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.
- 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
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Lenna is a media player software designed specifically for movie and TV enthusiasts. It is especially suitable for users who store their media content on a home NAS or cloud drive. Lenna supports managing multiple Emby/Jellyfin servers simultaneously, as well as direct video playback from WebDAV, SMB, 115 Drive, and Aliyun Drive sources. It offers powerful browsing, playback, and synchronization features, allowing you to easily enjoy high-quality home entertainment. Media Library Features: - Seamless connection to Emby, Jellyfin, WebDAV, SMB, 115 Drive, and Aliyun Drive servers. - Browse poster walls to quickly view all your media content. - Efficient search to easily find the movie or TV show you're looking for. - Categorized management to keep your media library organized. - Modify media library passwords to protect your personal content. Playback Features: - Background playback for uninterrupted streaming while multitasking. - Automatic picture-in-picture playback to enhance your multitasking experience. - Fixed and temporary playback speed control to cater to different viewing preferences. - Support for audio track and subtitle selection, providing a personalized viewing experience. - Full support for 4K, HDR, HDR10, HDR10+, and DolbyVision video playback for an immersive audio-visual experience. - DLNA casting support for seamless streaming to compatible TVs and devices, allowing you to enjoy content on larger screens with just a tap. Syncing Features: - iCloud Sync allows seamless switching between devices, so your viewing experience continues anywhere, anytime. - Trakt.TV / Simkl Sync connects Lenna to Trakt.TV / Simkl, syncing your playback progress. * Note: This app does not provide any media server links or video content.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 105 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 September 22, 2026 and September 26, 2026 respectively.
| Parameter | CastFlow | Lenna |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.0 (8 ratings) | 4.9 (105 ratings) — better |
| Positive reviews | 83.3% of reviews | 98.2% of reviews — better |
| Number of ratings | 8 | 105 — better |
| Update frequency | Every 26 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, Mac, Apple TV | iPhone, iPad, iPod, Apple TV |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 75 MB | 101 MB |
| Age rating | 4+ | 4+ |
| Developer | 辉 邓 | 佳琦 王 |
Customer experience
CastFlow
Lenna
Bugs and requests
CastFlow
Not enough reviews yet to summarise bugs or requests.
Lenna
Reported bugs
11 issues- 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'
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- Login shows 403 error despite correct credentials
- Playback buffering issues (low kbps)
- Only displays Season 1 for shows with multiple seasons
- Original film discs do not display size/bitrate correctly, showing error
- Playback freezes when returning to the screen after pausing
- RTS subtitles cannot be loaded
Requested features
19 requests- Add playback history tab
- Implement scraping and poster wall
- Add screen-off casting
- Support IPTV remote subscription (txt/m3u)
- Add gesture switch toggle
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- Add SMB support
- Add WebDAV support
- Add video caching/download function
- Add alternative line option for Emby servers
- Add privacy blur for locked interface
- Add screen casting to playback interface
- Add option to disable subtitle styles/effects
- Add dual subtitle support
- Add loading local subtitles from Files app
- Add macOS version
- Add TV version
- Add local video import from Files/Photos
- Add media library summary statistics
- Add option to not scrape for 115 cloud drive
In-app purchases
CastFlow
No in-app purchases
Lenna
- A Cup of Coffee$1.99
- A Deluxe Dessert$4.99
- A Big Meal$14.99









