Individual stations streamed from their own sites (or, in many cases, did not, owing to voluminous syndication and local advertising clearance issues), and the Format Lab website provided feeds of between 40 and 80 networks that were used primarily on Clear Channel's HD Radio subchannels, many of which transitioned to iHeartRadio unchanged.

[citation needed] In August 2008, Clear Channel launched the iHeartMusic website, featuring entertainment news, national news, music content including albums, singles on demand, music videos, and access to over 750 Clear Channel radio stations online.

On October 7, 2008, Clear Channel Radio launched the first version of iHeartRadio to the Apple iPhone and iPod Touch through the App Store.

[12] The launch coincided with the inaugural iHeartRadio Music Festival, the annual two-day event hosted by Ryan Seacrest at the MGM Grand in Las Vegas.

It featured original on-demand programming from celebrities like Ryan Seacrest and allowed users to upload their own content through Spreaker.

[26] In 2017, iHeartRadio expanded Plus and All Access to other platforms including desktop[27][28][29] in January 2017 at the Consumer Electronics Show (CES).

[32] In early 2020, iHeart fired "dozens" (estimated by one newspaper as "hundreds ... across its more than 850 radio stations"[33]) of its then 12,500 employees at a time when the company, bankrupt,[31] was viewed as being considered for purchase by Liberty Media.

[35] On April 23, 2020, the iHeartRadio app was launched in association with Uno Radio Group, which owns the NotiUno, Salsoul, Fidelity and Hot 102 brands in Puerto Rico.

The ad-supported stations (which include iHeartCountry, Alt Radio, The Beat (now Hip-Hop Beats), Classic Rock, Hit Nation, Latino Hits, iHeart80s, and iHeart90s as well as select holiday-themed stations when available) are to feature imagery to complement and enhance the audio experience, similar in fashion to Music Choice on digital cable and satellite TV.

available in Australia, Canada, the United States, Puerto Rico, Mexico and New Zealand [45] but blocks access from others such as Britain.

available across 250 device platforms including online, and via automobiles, gaming consoles, home audio, "smart" TVs, Android, iOS, iPadOS, WatchOS, iTunes, and Apple Music.

The iHeartRadio player has a Like/Dislike (Thumbs Up/Thumbs Down) rating tool used on songs playing on live and customized radio stations.

As My Favorites Radio learns a user's music taste over time, it adds various bonus tracks into the mix.

[48] It includes more than 250,000 podcasts, offers a Music recommender system and on-demand functionality, and allows listeners to save and replay songs from live broadcasts in digital playlists.

iHeartRadio is available across more than 250 platforms and 2,000 devices including smart speakers, digital auto dashes, tablets, wearables, smartphones, virtual assistants, TVs and gaming consoles.

On January 6, 2016, iHeartMedia announced that the iHeartRadio service would expand into Canada as part of a licensing deal with Bell Media.

[55] iHeartMedia announced iHeartRadio's expansion to Mexico on October 29, 2018, through an exclusive partnership with Grupo ACIR, a Mexican broadcasting company.