Radio apps connect traditional broadcast stations, internet streams, podcasts, and on-demand audio in one listening environment. The figures below show the scale of iHeartRadio, TuneIn, Pandora, and SiriusXM using the measurement periods stated by each source.
Contents
- iHeartRadio platform scale
- iHeartMedia reach and financial measures
- TuneIn audience and station inventory
- TuneIn app availability and premium catalog
- Pandora users and listening hours
- SiriusXM audience, churn, and revenue
iHeartRadio platform scale
iHeartRadio launched as an all-in-one audio service in 2011, according to the iHeartMedia digital page. The same source describes iHeartRadio as the number-one streaming broadcast radio platform and says it has five times the digital listening of the next-largest commercial broadcast radio company. Those are source-reported positioning measures, not independently calculated market shares.
The iHeartRadio app has more than 188 million registered users. Registration is different from active listening, so this figure should not be compared directly with a monthly active-user measure without additional methodology. The platform is available on more than 500 platforms and over 2,000 different connected devices. iHeartMedia also reports 4.8 billion total downloads and updates.
Its live-radio inventory is broad. iHeartRadio offers more than 3,500 live stations across every genre. In the wider iHeartMedia audio ecosystem, the company reported more than 860 owned-and-operated broadcast stations in its Q3 2024 investor deck. The station count and the app’s live-station count describe different parts of the business: one is a company broadcast-station figure, while the other is a platform catalog measure.
The scale indicators can be summarized as follows:
| Measure | Reported figure | Source or period |
|---|---|---|
| Registered iHeartRadio users | More than 188 million | iHeartMedia digital page |
| Platforms | More than 500 | iHeartMedia digital page |
| Connected devices | More than 2,000 | iHeartMedia digital page |
| Downloads and updates | 4.8 billion | iHeartMedia digital page |
| Live stations | More than 3,500 | iHeartMedia digital page |
| Owned-and-operated broadcast stations | More than 860 | iHeartMedia Q3 2024 investor deck |
These numbers describe distribution and catalog breadth rather than a single standardized audience metric. In particular, downloads and updates accumulate over time, while registered users represent accounts and not necessarily current monthly listeners.
iHeartMedia reach and financial measures
iHeartMedia’s Q3 2024 investor deck reported $1,008.1 million in consolidated revenue for the quarter. Within that total, Multiplatform Group revenue was $619.5 million, Digital Audio Group revenue was $301.0 million, Podcast revenue was $114.0 million, Digital excluding Podcast revenue was $187.0 million, and Broadcast Radio revenue was $448.8 million.
For the first nine months of 2024, the same investor deck reported $2,736.3 million in total revenue. Nine-month Broadcast Radio revenue was $1,233.6 million, nine-month Digital Audio Group revenue was $825.6 million, and nine-month Podcast revenue was $309.2 million. These are reported revenue figures for business segments and should not be interpreted as app revenue alone.
The deck also supplied audience-reach comparisons among U.S. adults aged 18 and older. Broadcast radio reached 91% of that population, while iHeartMedia broadcast radio reached 89%. Podcasts reached 47%, Spotify reached 45%, and TikTok reached 33%. The geography is the United States, the age group is adults 18+, and the figures are reach measures rather than registered-account totals.
iHeartPodcasts added a separate set of scale indicators for September 2024. It had 165,787,000 U.S. streams and downloads and a 30,644,000 U.S. unique monthly audience. The deck said iHeartPodcasts ranked number one in total global downloads for 51 consecutive months and number one in unique U.S. listeners for 48 consecutive months. It also reported more than 100 total shows reaching more than 1 million listeners per month.
The podcast figures use different units: streams and downloads count activity, while unique monthly audience counts people or devices under the source’s measurement methodology. The consecutive-month rankings are duration claims supplied by iHeartMedia, not calculations from the September totals.
TuneIn audience and station inventory
TuneIn’s 2023 media kit reported 30 million U.S. monthly active users and 70 million global monthly active users. The same media kit reported 450 million U.S. monthly session starts and 1.6 billion global monthly session starts. A session start measures listening activity, so it is not equivalent to a user count.
Connected-device activity was also reported separately. TuneIn recorded 60 million U.S. connected-device session starts and 300 million global connected-device session starts in the 2023 media kit. The geographic split matters: U.S. and global figures should not be added together because the U.S. activity is included within the global total.
The media kit reported 30,000 U.S. monthly stations streamed and 115,000 global stations streamed. TuneIn said it had more than 200 integrations. On its about page, TuneIn says it offers more than 120,000 streaming radio stations, brings together millions of podcasts, and plays on hundreds of connected devices.
The two station figures are not interchangeable. The 2023 media kit describes stations streamed during a monthly period, while the about page describes the service’s stated streaming-radio offering. A catalog total can be larger than the number of stations streamed in a particular month.
TuneIn app availability and premium catalog
The Google Play listing for TuneIn Radio reported more than 100 million downloads, a 4.7-star rating, and 2.76 million reviews. The listing also said the app was available in more than 197 countries and included more than 5.7 million podcasts.
Google Play downloads are an app-store distribution measure. They should not be read as monthly active users, and the listing’s rating and review count are store-level signals rather than listening-hour measures. Country availability also describes the app listing’s stated reach, not the number of countries with identical station rights or catalog access.
TuneIn Premium adds paid-catalog measures. The TuneIn Premium support page says the service includes more than 30 commercial-free music stations and unlimited access to more than 40,000 audiobooks. Those counts describe included Premium content and do not replace the larger free-service station figures.
Together, TuneIn’s reported figures show several layers of scale: monthly active users, sessions, station inventory, app downloads, geographic availability, podcast catalog size, and Premium content. Because each measure has a different unit and source date, comparisons are most useful within the same category.
Pandora users and listening hours
SiriusXM’s 2024 annual report said Pandora had approximately 43,344 monthly active users at December 31, 2024. The same report recorded 9,940 ad-supported listener hours in 2024, compared with 10,480 in 2023. These figures are reported in the units used by the annual report; the user values are presented as approximately stated counts.
Other SiriusXM filings supplied additional Pandora checkpoints. Pandora had approximately 43,721 monthly active users at September 30, 2024, approximately 45,129 at June 30, 2024, and approximately 46,500 at September 30, 2023. At June 30, 2023, the figure was approximately 47,419.
Later filings reported approximately 42,684 monthly active users at June 30, 2025 and approximately 41,112 at December 31, 2025. The dates are important because these are point-in-time observations rather than an annual average. The source labels the figures as approximately measured, so small differences should not be treated as exact user changes beyond the reported precision.
| Pandora measure | Reported figure | Measurement date or period |
|---|---|---|
| Monthly active users | Approximately 47,419 | June 30, 2023 |
| Monthly active users | Approximately 46,500 | September 30, 2023 |
| Monthly active users | Approximately 45,129 | June 30, 2024 |
| Monthly active users | Approximately 43,721 | September 30, 2024 |
| Monthly active users | Approximately 43,344 | December 31, 2024 |
| Monthly active users | Approximately 42,684 | June 30, 2025 |
| Monthly active users | Approximately 41,112 | December 31, 2025 |
| Ad-supported listener hours | 10,480 | 2023 |
| Ad-supported listener hours | 9,940 | 2024 |
SiriusXM audience, churn, and revenue
SiriusXM reported a combined monthly audience of approximately 160 million listeners in 2024 in its Q4 and full-year 2024 results. The combined figure is broader than Pandora’s monthly active-user measure, so the two should not be treated as like-for-like app audiences.
SiriusXM’s 2024 annual report recorded an average self-pay monthly churn rate of 1.6% in 2024 and 1.6% in 2023. Churn is a rate describing subscription cancellations or losses under the company’s stated self-pay methodology; it is not an audience size or share of listening.
The annual report recorded SiriusXM advertising revenue of $167 million in 2024, compared with $169 million in 2023. Pandora and off-platform advertising revenue was $1,606 million in 2024 and $1,589 million in 2023. Total SiriusXM revenue was $8,699 million in 2024 and $8,953 million in 2023.
The business measures cover different scopes. SiriusXM advertising revenue is distinct from Pandora and off-platform advertising revenue, while total SiriusXM revenue is the broadest company figure in this set. Revenue figures are financial measures, not direct indicators of the number of radio-app listeners.
For readers comparing radio apps, the most reliable approach is to keep each metric in its original frame: iHeartRadio’s registered users and distribution footprint, TuneIn’s active users and session starts, Pandora’s dated monthly active-user observations, and SiriusXM’s combined audience, churn, and revenue measures. The sources and periods do not support a single ranking of all four services on one universal audience metric.