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.

playso.io app-ads.txt check

playso.io is almost fully optimized: its app-ads.txt has no errors and matches 99% of the 550 lines its 4 ad networks expect — minor optimisation required: 5 lines are missing.

Checked 21 Oct 2026. 550 lines, 548 unique records, 2 duplicates, 0 invalid lines, 25 ad networks detected.

Ad networks in playso.io/app-ads.txt

AppLovin — account 1fbbabba0e8d2ba1700b0c7aa1739cb7: 36 lines in the file
Google AdMob — account pub-6088411097706087: 1 line in the file
Unity Ads — account 142784840: 161 lines in the file
Liftoff Monetize (Vungle) — account 6ad8a6369566b9e1924a26b1: 386 lines in the file, 5 expected lines missing
Mintegral — partner (reseller) lines only: 178 lines in the file, 400 expected lines missing
ironSource / LevelPlay — partner (reseller) lines only: 73 lines in the file, 52 expected lines missing
Chartboost — partner (reseller) lines only: 157 lines in the file, 400 expected lines missing
InMobi — partner (reseller) lines only: 56 lines in the file, 215 expected lines missing
DT Exchange (Fyber) — partner (reseller) lines only: 145 lines in the file, 305 expected lines missing
Yandex Ads — partner (reseller) lines only: 47 lines in the file, 121 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 35 lines in the file, 109 expected lines missing
BIGO Ads — partner (reseller) lines only: 137 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
BlueSea — partner (reseller) lines only: 8 lines in the file, 29 expected lines missing
DSP Exchange — partner (reseller) lines only: 57 lines in the file, 400 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 59 lines in the file, 385 expected lines missing
Monetrix — partner (reseller) lines only: 12 lines in the file, 81 expected lines missing
Prado — partner (reseller) lines only: 10 lines in the file, 17 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 150 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 36 lines in the file, 333 expected lines missing
Start.io — partner (reseller) lines only: 24 lines in the file, 133 expected lines missing
Kidoz — partner (reseller) lines only: 10 lines in the file, 12 expected lines missing
CAS.ai — partner (reseller) lines only: 43 lines in the file, 122 expected lines missing
DSail — partner (reseller) lines only: 43 lines in the file, 122 expected lines missing
Bidmachine — partner (reseller) lines only: 247 lines in the file, 400 expected lines missing

Corrected file: playso.io app-ads.txt (fixed).

FAQ

Does playso.io have an app-ads.txt?

Yes — https://playso.io/app-ads.txt has 550 lines (checked 21 Oct 2026).

Which ad networks does playso.io work with?

Its app-ads.txt lists AppLovin, Google AdMob, Unity Ads, Liftoff Monetize (Vungle), Mintegral, ironSource / LevelPlay, Chartboost, InMobi, DT Exchange (Fyber), Yandex Ads, VK Ads (myTarget), BIGO Ads and 13 more.

Is the app-ads.txt of playso.io correct?