Measurement parity for audio advertising
Display and video advertising have had independent verification for over a decade. Audio hasn't. Elladox exists to close that gap.
Built by audio and ad-tech engineers
Elladox was founded by engineers who spent years on both sides of the podcast advertising market — building audio processing systems on one side, and buying campaigns with no independent way to confirm delivery on the other.
Advertisers were paying invoices on the publisher's own numbers. Episodes went unavailable without anyone noticing. Ads were read from the wrong script, at the wrong position, next to content no brand would choose. Nobody was checking, because checking meant listening — and nobody can listen to everything.
So we built the system that listens. Today Elladox fetches, transcribes and analyzes podcast audio at scale, turning every monitored episode into evidence: was the ad there, did it sound right, was the content safe, could listeners actually reach it.
Trust, replaced with evidence
Our mission is simple: every dollar spent on audio advertising should be verifiable. When budgets move on evidence instead of assumptions, the whole ecosystem — advertisers, agencies and publishers alike — gets stronger.
How we work
Accuracy
A verification company is only as good as its worst measurement. We publish our methodology to clients and re-derive any result on request.
Transparency
Clients see how every number was produced — the audio, the transcript, the timestamps. Evidence you can't inspect isn't evidence.
Independence
We don't sell media, host podcasts or broker inventory. Our only product is measurement, so our incentives always align with the truth.
Find us online
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