What is Google Chromecast? Which apps and products are supported?

What is Google Chromecast?
(Image credit: Google)

Since launch, Google’s Chromecast tech has escaped its dongle-shaped hearth and spread like wildfire. These days it’s embedded in a whole host of products - only some of which are actually made by Google.

While similar in practical terms to Apple AirPlay and plain old Bluetooth, Chromecast actually works differently to - and in some ways better than - both.

So how is Chromecast different? How do you get it? And how do you use it? Buckle-up as we give you the full low-down.

What is Chromecast?

What is Chromecast?

Put very simply, Chromecast is a technology that enables the sending of media files (and web pages, but we’ll get to that) from a handheld device to a TV screen or audio system.

While the number of products with Chromecast built-in (literally called “Chromecast built-in” products) has blossomed, Google’s own Chromecast devices remain some of the best and most interesting, not least of all because they can be used to affordably add clever streaming features to TVs and sound systems that otherwise lack them.

Those Google Chromecast devices are the standard 2nd-gen Chromecast and the 4K Chromecast Ultra (the excellent Chromecast Audio has sadly been discontinued).

Plug these into your TV or AV system and they enable you to wirelessly stream video, pictures or audio from your smartphone or tablet.

And it’s not just for those with Android phones and tablets. Unlike AirPlay, which only Apple products can use, Chromecast can be used by a smartphone or tablet with any OS.

What is Chromecast built-in?

What is Chromecast built-in?

'Chromecast built-in' is what Google calls the same streaming abilities integrated into TVs and displays. So if a TV comes with Chromecast built-in, it's ready to receive content sent by a phone or tablet without the need of a dongle.

Chromecast built-in (formerly known as Google Cast) refers to a product's ability to 'cast' content, it means streaming it to a Chromecast-equipped or Chromecast built-in device. 

The app used to set up and manage this streaming is called Google Home (which is separate from the voice-controlled speaker of the same name). Yes, it is a bit confusing.

The reason for all this inconsistency? Progress, mostly, and Google's piecemeal approach. Google first launched the Chromecast dongle with only a small number of compatible apps. But since 2014 it's made the software available to all developers and manufacturers, allowing Chromecast built-in to be added to any product.

Along the way, the many name changes have caused industry onlookers to scratch their heads. Thankfully, you can identify any product with Chromecast built-in by looking for the logo. At least that part is simple enough.

How do you stream to a Chromecast device?

It’s pretty simple to stream content to any Chromecast device, whether that’s one of Google’s own or one with Chromecast built-in.

First, make sure you have the Google Home app downloaded on your smart device, which you'll need to set up the 'cast' function.

Then connect your smartphone or tablet to the same Wi-Fi network as your TV, open up a Chromecast built-in-enabled app such as YouTube, Now TV, Netflix or Spotify and press the 'cast' button from within the app - it’s usually at the top right of the screen, and looks like a wi-fi symbol inside a rectangle.

You can even ‘cast’ tabs from the Chrome web browser on PC or Mac, which is less fun but can be useful for work meetings and the like - you’ll find the option in Chrome’s settings menu.

And that’s it! Your content will be beamed to the big screen or music system, and you can control playback via your mobile device in the best quality your broadband connection can muster. Happy days.

The big difference between ‘casting’ in this way and using Bluetooth or AirPlay (or AirPlay 2, for that matter) is that the ‘casted’ content is not coming from your handheld device but directly from the internet. Your phone or tablet is acting more like a fancy remote control, pointing your TV or speaker to what you want to watch or listen to.

The advantages to this approach are numerous: quality is generally better thanks to the higher quality and more direct data transmission, there’s much less strain on your mobile device’s battery, any notifications or calls you receive won’t interfere with whatever is being streamed, and the video or audio won’t immediately stop if you move out of range of the Chromecast device that’s receiving it. It’s similar to how Spotify Connect works, but it’s obviously not restricted to use with just the one app.

Which apps are Chromecast-compatible?

Which apps are Chromecast-compatible?

So what can you stream using Google Chromecast? Big name audio apps, including Spotify, Tidal, Deezer, Amazon Music (on Android-only), Apple Music, and of course Google Play Music are all supported, as is Plex (for streaming locally stored music collections).

As for video, Netflix, Amazon Video, Now TV, BBC iPlayer, ITV Hub, All 4, My5, Google Play Movies and YouTube are all present. You can see a full list of compatible Google Chromecast built-in apps for both TVs and speakers here.

Which Google Chromecast built-in TVs are available?

Google Chromecast built-in TVs

Chromecast began to feature on TVs with the Android TV operating system in 2017. So it now includes most Sony and Philips TVs from 2017 onwards, plus many from the likes of LG, Sharp, Toshiba, Polaroid and Vizio.

Award-winning TVs, such as the LG OLEDC9 and Sony KD-49XG9005 feature Chromecast built-in for easy casting.

Google Chromecast built-in speakers and music systems

Google’s main entries into Chromecast built-in speakers are its own Google Home, Home Mini and Home Max. You can stream music from your phone to the one of these using Chromecast-compatible apps, or even use the Home speakers themselves to ‘cast’ content to other Chromecast devices using Google Assistant.

You’ll also find Chromecast built-in in products from other manufacturers, such as Sony, B&O, Harman Kardon, JBL, LG, Onkyo, Philips, Sony, NAD and Naim.

And we’re not just talking wireless speakers here: Sony’s multi Award-winning home cinema amp, the STR-DN1080, has Chromecast built-in, as do Naim’s awesome Uniti Atom, Nova and Star streaming systems.

You can find the full list of TVs, speakers and more with Chromecast built-in here.

Tom Parsons

Tom Parsons has been writing about TV, AV and hi-fi products (not to mention plenty of other 'gadgets' and even cars) for over 15 years. He began his career as What Hi-Fi?'s Staff Writer and is now the TV and AV Editor. In between, he worked as Reviews Editor and then Deputy Editor at Stuff, and over the years has had his work featured in publications such as T3, The Telegraph and Louder. He's also appeared on BBC News, BBC World Service, BBC Radio 4 and Sky Swipe. In his spare time Tom is a runner and gamer.