One Castario · several TV routes
Castario casts your own photos, videos, music, web pages and IPTV playlists, and mirrors your screen where the selected TV route supports it. The iPhone and iPad sender is first; Android is part of the product family but is not a public download yet.
The first public sender is for iPhone and iPad, iOS 18 or newer. The Android sender is not a public download yet.
Open Castario on your phone and choose this TV.
Waiting on this network
Castario
Ready to cast
One tap connects this iPhone to the TV you picked.
ConnectWhat would you like to cast?
Mirror Screen
Your whole iPhone
Photos
From your library
Videos
From your library
Audio
A sound file
IPTV
Your own playlists
Browser
Browse on the TV
Features
Six things from one sender. What reaches the television depends on the route and the capabilities Castario can verify for that TV. In the current iPhone and iPad product, mirroring and your own media are free; the browser package and IPTV are the subscription.
Send a live view of your screen to a compatible native Castario receiver. In the current iPhone and iPad sender, recording starts from the iOS broadcast picker and app sound is included where iOS and the source app allow it. Google Cast and DLNA do not provide Castario screen mirroring.
Show a photo you select on the television. Native Castario receivers, Google Cast and compatible standard TV routes handle it in different ways, and only when the selected TV reports or has demonstrated the needed capability.
Play a video from your library on the big screen. Formats, codecs, playback controls and delivery methods vary by receiver route; Castario does not promise that every file plays on every television.
Send a sound file from your device to a route that accepts it. The TV may fetch it locally or receive it through the selected receiver path, depending on that route's capabilities.
Add your own M3U or M3U8 playlists. Compatible native receivers and Google Cast can play supported channels; standard TV routes are offered only when their announced capabilities allow it. Castario supplies no channels or content subscriptions.
Browse on the phone with bookmarks, web search, a general ad and tracker filter, and popup protection. A compatible native receiver can open pages; Google Cast can open embeddable pages through the Castario Web Receiver, but it cannot apply the same request-level blocking.
How it works
Castario starts with the TV you choose, then uses a route that TV actually supports. The phone and television need to be reachable on the same local network.
Open the sender on your phone. The first public sender is planned for iPhone and iPad; the Android sender remains in development and is not advertised as a download.
Choose a Castario receiver, a Google Cast device or a compatible standard TV found on your network. Castario reads the route's capabilities before offering a feature.
A native Castario receiver asks for confirmation on its own screen the first time a phone connects. Google Cast and standard playback routes do not require the Castario TV app or this pairing step.
Mirror only through a compatible native receiver, or cast a supported photo, video, sound, page or IPTV channel through the selected route. Castario explains unavailable capabilities instead of treating every TV alike.
Inside the app
Four screens from the current iPhone and iPad sender build. Android belongs to the same product family, but its unfinished build is not presented here as a released app.
Castario
Ready to cast
One tap connects this iPhone to the TV you picked.
ConnectWhat would you like to cast?
Mirror Screen
Your whole iPhone
Photos
From your library
Videos
From your library
Audio
A sound file
IPTV
Your own playlists
Browser
Browse on the TV
The selected television sits at the top with its current state. The same actions stay visible while capability gates explain which ones this TV route can use.
Devices
TVs on this network
Other TVs in this network
Takes your photos, videos and music. Not IPTV channels — this TV plays no playlists.
These have no Castario app. They can play what this phone sends them, but they cannot mirror your screen.
Native Castario receivers, Google Cast devices and compatible standard TVs can appear as distinct routes, together with what each one can and cannot do.
Browser
New video recognized
Plays from this page
Cast to the TVBookmarks
Blocks known advertising and tracking requests on every site, from a general filter list.
Pages open on the phone with the mobile browser's protections. Castario offers only the handover paths the selected TV can support.
Your own playlists
Channels
Add your own M3U or M3U8 playlist. The TV fetches a channel directly from its provider; the playlist itself stays on this iPhone.
M3U and M3U8 files you add yourself. Provider access data is held in protected storage on the device and is sent only to the matching provider host.
Compatibility
One Castario sender can reach a television in several ways. The route decides which capabilities are available; casting and screen mirroring are not the same thing.
Full route
Fire OS · Vega OS · Android TV · Google TV
The full receiver path is native to Fire TV / Fire OS, Fire TV Select / Vega OS, Android TV and Google TV. Receiver builds are free, but each platform, device and negotiated protocol version still determines the capabilities Castario can offer.
Cast route
Castario Custom Web Receiver
A Chromecast or Cast-enabled TV can launch Castario's hosted Web Receiver at castario.de/cast/, so a native Castario TV app is not required. The route uses Google Cast and has a deliberately different capability set.
Standard route
DLNA / UPnP AVTransport
Some Smart TVs can accept media over standards they already implement. Castario uses the capabilities each TV announces; a model name or brand is never treated as proof that a particular file or feature works.
A quick view of the route Castario can use for each task. “When compatible” always depends on the selected television, format and negotiated capabilities.
| Capability | Native receiver | Google Cast | Standard TV |
|---|---|---|---|
| Live screen mirroring | SupportedCompatible native receiver only | Not available | Not available |
| Own photos | Supported | Supported | When compatibleTV-announced support |
| Compatible video & audio | When compatibleReceiver capabilities | When compatibleCast media support | When compatibleTV-announced support |
| Web pages | When compatibleReceiver browser route | When embeddableIncluding supported YouTube | Not available |
| Your IPTV playlists | When compatibleSupported channel formats | When compatibleSupported HLS playback | Not promised |
| Connection model | Castario pairingEncrypted after confirmation | Google Cast session | TV standardNo Castario pairing |
Privacy
Castario has no product account, no first-party product analytics and no cloud media proxy. The website and Cast Web Receiver are hosted software, and Google Cast is a third-party platform route; the Privacy Policy separates those flows from private media sent locally.
Native receiver sessions carry screen, sound and private files between your phone and television over the local network. Castario does not receive and forward them through a cloud media proxy.
There is nothing to sign up for and no Castario advertising or analytics system. App stores, Google Cast, websites and IPTV providers have their own clearly separated data flows.
Bookmarks, browser history, playlists, pairings and receiver preferences are stored on the relevant device. IPTV access data is protected by the platform's secure storage and sent only to the matching provider host.
Native receivers confirm and encrypt a new phone connection. Google Cast instead uses Google's Cast session and the hosted Castario Web Receiver; compatible Smart TVs use their own announced standard playback path.
FAQ
Castario is one casting and mirroring product with a mobile sender and several TV routes. It can send your own media, web pages and IPTV playlists, and it can mirror a live phone screen only when a compatible native Castario receiver is selected.
The first public sender is for iPhone and iPad running iOS 18 or newer, and its App Store listing is not live yet. An Android phone and tablet sender exists in development, but it is not currently offered as a public download and does not yet carry every iOS capability.
Native Castario receiver paths exist for Fire TV on Fire OS, Fire TV Select on Vega OS, Android TV and Google TV. Chromecast and other Google Cast devices use the Castario Custom Web Receiver. Compatible Smart TVs may also accept selected media over DLNA. The available features depend on the route and the capabilities of the actual TV.
No. A native Castario receiver is required for Castario screen mirroring and for the fullest negotiated receiver path. A Chromecast or Google Cast device can use the hosted Castario Web Receiver, and a compatible DLNA television can accept the media capabilities it announces, without installing our native TV app.
Casting gives a selected photo, media item, page or channel to a TV playback route, so the television or receiver fetches or plays that item. Screen mirroring continuously captures the phone display and sends that live picture to a compatible native Castario receiver. A route that can cast does not automatically support mirroring.
The Castario Custom Web Receiver can show selected photos, play compatible video and audio, play supported IPTV streams, and open web pages that allow embedding, including the supported YouTube path. Cast media sessions can provide play, pause, seek and status. Google Cast does not provide Castario screen mirroring, and its Web Receiver cannot apply the same request-level ad and tracker filter as the phone browser or native TV receiver.
Mirroring needs Castario's live transport and a compatible native receiver. Google Cast carries selected media and receiver commands, not Castario's live screen stream, and DLNA is a standard media-playback route. Castario therefore disables mirroring on those routes instead of pretending they are equivalent.
Castario does not bypass DRM or capture protections. An app may black out its picture during screen recording, and a website, service, stream, codec or TV player may refuse playback. No streaming service or protected title is promised to work.
They must be reachable on the same local network. A guest, hotel or managed network that isolates devices can prevent discovery, pairing or playback. Google Cast and DLNA also depend on their own device discovery being available on that network.
Yes, when the selected route accepts the item. Native Castario receivers, Google Cast and DLNA have different format, codec, delivery and control capabilities, so support for one file or one television does not prove support for all of them.
You add your own M3U or M3U8 playlist by file or supported address. A compatible television normally fetches the channel directly from its provider. For supported HLS that needs credentials a non-native route cannot carry, the iPhone sender can temporarily fetch it and relay the bytes over your local network; keep the app available or that channel stops. Headers, DRM, formats and playback differ by route. Castario provides no channels or content subscriptions, and you are responsible for having the right to use your playlist.
In the current iPhone and iPad product, native-receiver mirroring and sending your own photos, videos and music are free. The subscription covers the browser package and your own IPTV playlists, with the price and terms shown by the App Store before purchase. Native TV receivers and the Google Cast receiver route have no separate purchase. Android Mobile is not yet a public paid product.
Castario does not operate a cloud media proxy that receives and forwards your private screen, photos, videos or audio. Native receiver transfers stay on the local network. Google Cast, websites, search engines and IPTV providers are separate routes with their own data flows, and requests for the hosted Web Receiver reach castario.de. The Privacy Policy explains each one.
The iPhone and iPad sender can build a short diagnosis report — states and counts only, without network addresses, television names, playlists or viewing history. It stays on the device until you choose to send it. You can also write to support@castario.de.
The first public sender is coming to iPhone and iPad. Choose a native Castario receiver for mirroring, or use Google Cast or a compatible standard TV route for the features that route supports.
The first public sender is for iPhone and iPad, iOS 18 or newer. The Android sender is not a public download yet.