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.

yuandu.ydbetter.com app-ads.txt check

yuandu.ydbetter.com is missing out on higher CPMs: its app-ads.txt has 1 invalid line. Buyers' crawlers skip invalid lines, so those sellers can't be verified.

Checked 19 Oct 2026. 581 lines, 454 unique records, 24 duplicates, 1 invalid lines, 25 ad networks detected.

Ad networks in yuandu.ydbetter.com/app-ads.txt

Google AdMob — account pub-8780185722795417: 1 line in the file
AppLovin — account 3a6e7bac7928ef68de06ac1a72e9328e: 34 lines in the file, 2 expected lines missing
Smaato — account 1100057628: 1 line in the file
Mintegral — partner (reseller) lines only: 224 lines in the file, 400 expected lines missing
Unity Ads — partner (reseller) lines only: 53 lines in the file, 107 expected lines missing
ironSource / LevelPlay — partner (reseller) lines only: 28 lines in the file, 97 expected lines missing
Liftoff Monetize (Vungle) — partner (reseller) lines only: 65 lines in the file, 325 expected lines missing
Chartboost — partner (reseller) lines only: 120 lines in the file, 400 expected lines missing
InMobi — partner (reseller) lines only: 33 lines in the file, 238 expected lines missing
DT Exchange (Fyber) — partner (reseller) lines only: 80 lines in the file, 370 expected lines missing
Yandex Ads — partner (reseller) lines only: 41 lines in the file, 127 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 38 lines in the file, 106 expected lines missing
BIGO Ads — partner (reseller) lines only: 102 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 337 lines in the file, 400 expected lines missing
DSP Exchange — partner (reseller) lines only: 54 lines in the file, 400 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 35 lines in the file, 400 expected lines missing
Monetrix — partner (reseller) lines only: 13 lines in the file, 80 expected lines missing
Prado — partner (reseller) lines only: 8 lines in the file, 19 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 161 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 33 lines in the file, 336 expected lines missing
Start.io — partner (reseller) lines only: 16 lines in the file, 141 expected lines missing
Kidoz — partner (reseller) lines only: 6 lines in the file, 16 expected lines missing
CAS.ai — partner (reseller) lines only: 40 lines in the file, 125 expected lines missing
DSail — partner (reseller) lines only: 40 lines in the file, 125 expected lines missing
Bidmachine — partner (reseller) lines only: 176 lines in the file, 400 expected lines missing

Invalid lines

singularads, 548745, RESELLER

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

FAQ

Does yuandu.ydbetter.com have an app-ads.txt?

Yes — https://yuandu.ydbetter.com/app-ads.txt has 581 lines (checked 19 Oct 2026).

Which ad networks does yuandu.ydbetter.com work with?

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

Is the app-ads.txt of yuandu.ydbetter.com correct?