Quick answer
Spotify Advertising and iHeartMedia are the two largest audio advertising platforms in the US, but they serve different inventory mixes. Spotify reaches a streaming-first audience through music, podcasts, and audiobooks, with strong digital targeting and programmatic access. iHeartMedia reaches a broadcast radio audience at massive scale alongside its own streaming and podcast network, with strengths in local market reach and live event integrations. For digital-first audio advertising, Spotify is the default. For broad national and local broadcast reach, iHeart is the larger footprint.
Audio advertising has expanded well beyond traditional broadcast radio. Streaming platforms now carry audio advertising to audiences that no longer listen to traditional radio, while broadcast operators have built digital and podcast layers on top of their existing station footprints.
This comparison covers Spotify Advertising and iHeartMedia head-to-head, then covers three alternatives that serve the audio advertising category from different angles.
Spotify Advertising
Spotify reaches its audience through music streaming, podcasts, and audiobooks. With a large and growing monthly active user base spanning 180+ markets, Spotify’s advertising inventory is available across free-tier listeners on desktop, mobile, and connected devices.
Spotify’s ad formats include streaming audio ads (15-30 second spots between songs or podcast episodes), video ads (available on mobile), and display formats. Podcast ads are available both as host-read placements (bought through Spotify’s podcast network directly) and as programmatic insertions through Spotify’s dynamic ad insertion system.
Targeting on Spotify goes beyond demographic and geographic segments. Spotify offers targeting by listening context, letting advertisers reach people in specific listening moments: Driving, Exercise, Chill, Party, Gaming, and others. This contextual targeting is unique to Spotify’s environment and gives advertisers the ability to match message to mindset in a way that display or CTV targeting does not offer.
Spotify Ad Exchange enables programmatic buying: advertisers can reach Spotify’s audience through supported DSPs including The Trade Desk, DV360, and others, applying their existing audience data and programmatic workflows to Spotify inventory. Spotify Ads Manager offers direct self-serve buying for advertisers who want to set up campaigns without going through a DSP, with a low minimum spend threshold.
Spotify’s podcast network includes a significant portion of top podcasts following its acquisitions and exclusive agreements. Advertisers buying Spotify podcast inventory can reach both its owned shows and independent podcasts distributed through Spotify.
Best for: Digital-first audio advertisers who want programmatic access, contextual targeting by listening moment, and reach into a streaming-native audience that has largely moved away from broadcast radio.
iHeartMedia
iHeartMedia operates the largest US broadcast radio network by station count, spanning hundreds of stations in markets across the country. This broadcast footprint gives iHeart a reach in local markets that streaming-first platforms do not replicate, particularly for advertisers who need local radio buys as part of a media strategy.
Alongside its broadcast operations, iHeart runs iHeartRadio, a free streaming app that aggregates live radio stations, custom stations, and on-demand content. The iHeartRadio app extends iHeart’s reach into the streaming audience and provides a digital inventory layer alongside broadcast.
iHeartMedia also operates a podcast network through iHeartPodcasts, one of the larger podcast publishers in the US. The podcast network spans a wide range of genres and allows iHeart to offer bundled buys that include broadcast, streaming, and podcast inventory in a single campaign.
iHeart’s live events operation, including the iHeartRadio Music Festival and other properties, gives brands sponsorship and activation opportunities that are distinct from standard audio placements.
Buying iHeart inventory typically goes through its sales team for broadcast and custom packages. The platform has expanded self-serve digital options but is primarily a managed or direct-sold buying experience for most advertisers.
Best for: Advertisers who need local market broadcast radio reach, brands that want a single buy spanning broadcast, streaming, and podcast inventory, or brands seeking live event sponsorship alongside audio placements.
Head-to-Head Comparison
| Dimension | Spotify Advertising | iHeartMedia |
|---|---|---|
| Primary audience | Streaming-first (music, podcasts) | Broadcast radio + streaming + podcasts |
| Programmatic access | Yes (Spotify Ad Exchange, major DSPs) | Limited; primarily direct-sold |
| Self-serve buying | Yes (Spotify Ads Manager) | Expanding; primarily managed |
| Local market radio | No | Yes (core strength) |
| Podcast inventory | Large network + dynamic insertion | iHeartPodcasts network |
| Contextual targeting | Yes (listening moments) | Demographic + geographic |
| Live events | No | Yes (iHeartRadio events) |
| International | Yes (180+ markets) | Primarily US |
Alternatives Worth Evaluating
Pandora and SiriusXM (SXM Media)
SXM Media is the joint ad sales operation for Pandora’s streaming service and SiriusXM’s satellite radio network. Pandora built one of the earliest streaming audio ad platforms in the US and has a large listener base, particularly strong among older demographics compared to Spotify. SiriusXM reaches in-car listeners through satellite radio, a distinct audience from both streaming platforms and broadcast radio.
Together through SXM Media, the combined inventory gives advertisers access to both streaming Pandora users and SiriusXM satellite subscribers. For advertisers targeting in-car listening or older demographic segments, SXM Media’s inventory is worth evaluating alongside Spotify and iHeart.
Audacy
Audacy is a major US broadcast radio operator, similar in model to iHeartMedia but with a different station footprint. Audacy also has a digital platform and podcast operation alongside its broadcast inventory.
For advertisers running local radio buys in markets where Audacy holds strong stations, Audacy is a direct alternative to iHeart for broadcast placements. Audacy’s digital and podcast inventory provides a complementary digital layer alongside its core radio business.
Acast
Acast operates as an independent podcast marketplace, representing a large global network of independent podcast creators and enabling ad buys across them. Acast’s model differs from Spotify and iHeart in that it is focused entirely on podcasts rather than music or broadcast radio.
For advertisers who want broad podcast reach across a network of independent shows, Acast provides access to inventory that sits outside the major platform-owned podcast networks. Acast supports host-read and dynamic ad insertion formats.
Methodology
Platform capabilities and reach figures are sourced from published vendor documentation and public announcements as of July 2026. Audience and reach figures shift quarterly; verify current scale with each vendor directly. We do not accept payment to rank platforms in this comparison.
Is your platform missing from this comparison, or has something changed? Suggest an edit or get your product listed, or email our team at [email protected].