What is the IAB measurement standard?

The IAB Podcast Measurement Technical Guidelines define how a download is counted: which requests are filtered out as bots or duplicates, and how much of a file must be requested before it counts. A hosting platform certified against the guidelines reports downloads the same way as every other certified host, so numbers from two shows can be compared.

Are downloads the same as listens?

A download is a request for the episode file that passed the filters. It does not confirm that anyone pressed play or heard the ad. Listen data exists only inside each app, such as Apple Podcasts or Spotify, and covers that app's listeners alone. Ask for both and expect the listen figure to be lower.

Why does ad position matter more on a sleep podcast?

Listeners play these shows to fall asleep, so the audience is most awake in the first minutes of an episode. A pre-roll or an early mid-roll reaches more conscious listeners than a spot placed deep into a long episode. Ask the show where its mid-roll sits in minutes.

What should a post-flight report include?

Downloads per episode the spot ran in, by date, for the flight window, plus the placement and the read that ran. If you used a promo code or a pixel, add redemptions or attributed visits beside the downloads. The report should match the estimate you bought against, with a make-good agreed if it falls short.

Can a host read include a promo code or a vanity URL?

Nearly every show allows it. The code or URL is written into the script the host reads, and it gives you attribution without any tracking technology. Keep it short and easy to say, because the listener may be half asleep when they hear it.

Buying Ads on a Sleep Podcast: What to Ask

A sleep podcast is an unusual place to advertise. The audience is loyal, plays nightly, and listens through headphones in the dark, with nothing else competing for attention. The same audience also falls asleep partway through the episode, which changes what a placement is worth. This guide covers the questions to put to any sleep show before you buy, so the numbers you are quoted mean what you think they mean.

Key takeaways

Ask for IAB-certified downloads, with the window. "Downloads per episode" needs a time window, an average or a median, and a certified host behind it before two shows can be compared.
Demographics come from surveys and app dashboards. Ask for the sample, the date, and whether the profile is one show or a blend of several.
Position matters more than on other podcasts. The audience is most awake in the first minutes, so a pre-roll or an early mid-roll reaches more conscious listeners than a late spot.
Price by placement and format. Host-read mid-rolls cost the most per thousand, and the quote should say what is included: script approval, the number of reads, and any usage rights.
Agree the report before the flight. Downloads by episode and date, the placement that ran, and a make-good if delivery falls short.

Why sleep podcasts are different

Three things set a sleep show apart from a news or comedy podcast. The audience is habitual: the same people play an episode most nights as part of a routine, so frequency builds without a large buy. Episodes are long, often an hour or more, and ad loads are kept light to protect the mood. And listeners fall asleep, by design, which means an ad in the first few minutes reaches a conscious person and an ad at minute forty may not.

Those traits make a sleep show a strong fit for products the listener already connects with bedtime, from mattresses to sleep trackers, and a poor fit for a message that needs careful attention. Plan the creative for a calm, half-awake listener: one idea, a short code, a warm read.

How downloads are measured

The unit of podcast advertising is the download: a request for the episode file that passed a set of filters. The IAB Podcast Measurement Technical Guidelines define those filters, and a hosting platform certified against them counts in the same way as every other certified host. Ask which platform hosts the show and whether it is certified.

Then ask three more things about any downloads figure:

The window. Downloads in the first seven days of an episode are the industry’s usual unit, and a thirty-day figure will be higher. Make sure the quote and the report use the same window.
Average or median. A few viral episodes lift an average. A median tells you what a typical episode does.
New episodes or the catalog. Back-catalog episodes keep collecting downloads for months, and a show that sells dynamically inserted ads can run your spot across them. That inventory is real, but it is a different audience from the nightly listeners of a new episode.

Downloads are not listens. Play data exists only inside each listening app, covers only that app’s users, and is lower than the download count. A show that offers both is being straight with you.

Where demographics come from

No podcast knows who its listeners are. Demographic profiles come from listener surveys, from the audience dashboards inside Apple Podcasts and Spotify, which describe only that app’s users, and from panel data held by ad marketplaces. Ask the source, the sample size, and the date for every figure.

Two more questions pay for themselves. First, is the profile for one show or a blend of several? A network media kit often blends shows, and the method matters: a profile weighted by each show’s reach says something different from one that takes the best number from each. Ask which. Second, what is the US share, and is it per show? International reach is good for some brands and wasted for others, and it varies between shows on the same network.

If your product is tied to one platform, ask for the device or app split. The Apple Podcasts share of a show’s downloads is a fair proxy for its iPhone audience.

Placements and formats

Podcast spots are sold by position and by who reads them.

Position. Pre-roll runs before the episode starts. Mid-roll runs inside it. Post-roll runs at the end. On a sleep show, the pre-roll and an early mid-roll reach the most awake listeners, so ask where the mid-roll sits in minutes rather than assuming it is mid-episode. A post-roll on a sleep podcast reaches a listener who stayed awake for an hour, which is a small group.

Format. A host-read spot is voiced by the show’s host, in their own words, around points you approve. A producer-read spot is a produced ad, voiced by someone else, inserted into the episode. Host reads cost more and perform better, because the listener trusts the voice, and on a sleep show the voice is the product.

Insertion. A baked-in ad is part of the episode file forever. A dynamically inserted ad is stitched in at download time, can run across the back catalog, and can be removed when the flight ends. Dynamic insertion gives you reach; baked-in gives you permanence. Ask which the show uses and whether your spot stays in the episode after the campaign.

Ask about ad load and exclusivity too. How many spots run in an episode, and will a competitor’s spot run in the same one? Category exclusivity for the flight is a reasonable request.

How pricing works

Most shows quote a CPM, the cost per thousand downloads, by placement and format. A host-read mid-roll carries the highest CPM. Smaller shows may quote a flat rate per episode instead. Either way, the quote should state:

The estimated downloads the price is based on, with the window.
What is included: script approval, the number of reads, a spoken promo code, and any rights to reuse the read in your own marketing.
The minimum spend, and the lead time to the first available episode.
What happens if delivery falls short, usually a make-good of extra spots.

Ask for a sample read from a previous campaign. Hearing how the host handles a product tells you more than any rate card.

Attribution and reporting

A promo code or a vanity URL spoken in the read is the simplest attribution and works without any technology. Pixel-based attribution services match the IP addresses that downloaded the episode against visits to your site, and give a fuller picture for a larger buy. Brand-lift surveys measure recall rather than clicks. Choose the method before the flight, because it changes the script.

Agree the post-flight report in advance: downloads per episode the spot ran in, by date, for the flight window, with the placement and the read that ran. If the show cannot produce this, the estimate you bought against cannot be checked.

The checklist

Which platform hosts the show, and is it certified against the IAB measurement guidelines?
Downloads per new episode: over what window, average or median, and from which source?
Is the audience profile one show or a blend, and how was the blend weighted?
What are the US share and the device or app split, per show?
Where does each placement sit in minutes, and how many spots run per episode?
Host-read or producer-read, baked-in or dynamically inserted?
CPM or flat rate by placement, the minimum spend, and the lead time?
Can the read include a spoken promo code or vanity URL?
May we reuse the read in our own channels, and at what cost?
What does the post-flight report contain, and what is the make-good?

How we answer these

Our media kit states downloads per new episode for the shows featured for advertisers, measured as IAB v2-compliant downloads from Megaphone and Simplecast, the audience profile with the method used to blend it, the geographic split, the brands that have run on the shows, and the formats we offer. Pre-roll is our standard placement and we do not run mid-rolls. Host reads can carry a spoken promo code, every campaign closes with a post-flight report, and most buys are booked through Libsyn Ads. Ask us the rest, including the US share and device split per show, and we will answer in writing before you buy.

What to ask before buying ads on a sleep podcast