An IAB Tech Lab standard that lets app publishers declare which ad networks are authorized to sell their inventory.

Where do I put the app-ads.txt file?

At the root of the developer website listed in your App Store / Google Play page, e.g. https://studio.com/app-ads.txt.

What is a Certification Authority ID?

An optional TAG-ID of the ad system, the 4th field of an app-ads.txt record.

singularads.com app-ads.txt check

singularads.com is missing out on higher CPMs: its app-ads.txt has 4 invalid lines. Buyers' crawlers skip invalid lines, so those sellers can't be verified.

Checked 20 Oct 2026. 46 lines, 40 unique records, 1 duplicates, 4 invalid lines, 2 ad networks detected.

Ad networks in singularads.com/app-ads.txt

Magnite (Rubicon) — account 24856: 1 line in the file
TripleLift — account 13792: 1 line in the file

Invalid lines

audiology.media, DIRECT
audiology.media, RESELLER
conversantmedia.com, 100087, DIRECT 03113cd04947736d
adform.com, 3014

Corrected file: singularads.com app-ads.txt (fixed).

FAQ

Does singularads.com have an app-ads.txt?

Yes — https://singularads.com/app-ads.txt has 46 lines (checked 20 Oct 2026).

Which ad networks does singularads.com work with?

Its app-ads.txt lists Magnite (Rubicon), TripleLift.

Is the app-ads.txt of singularads.com correct?