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.

synsidium.com app-ads.txt check

synsidium.com is missing out on higher CPMs: its app-ads.txt has 16 invalid lines. Buyers' crawlers skip invalid lines, so those sellers can't be verified.

Checked 20 Oct 2026. 6,305 lines, 4,402 unique records, 1,841 duplicates, 16 invalid lines, 30 ad networks detected.

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

InMobi — account 8ba802ff7e7d418e86abdd36bb51fe74: 253 lines in the file, 19 expected lines missing
Mintegral — account 20391: 400 lines in the file, 48 expected lines missing
Smaato — accounts 1100057628, 1100057546, 1100047478: 3 lines in the file
Maticoo (zMaticoo) — account 114490: 258 lines in the file, 187 expected lines missing
Chartboost — account 552276690d6025770b0ca50b: 400 lines in the file, 1 expected line missing
Liftoff Monetize (Vungle) — account 561e8d966b8d90f61a00348d: 391 lines in the file
Google AdMob — account pub-6812690572914635: 1 line in the file
Unity Ads — account 27727: 159 lines in the file, 2 expected lines missing
PubMatic — accounts 160565, 162223: 2 lines in the file
TikTok Ad Network (Pangle) — account 9898: 1 line in the file
ironSource / LevelPlay — account 239973: 105 lines in the file, 21 expected lines missing
AppLovin — account aa174f2dd7fe0a6a4dd3ad7d445ac93d: 36 lines in the file
DT Exchange (Fyber) — account 209409: 400 lines in the file, 19 expected lines missing
Bidmachine — accounts 503, 503-1: 400 lines in the file, 70 expected lines missing
Yandex Ads — partner (reseller) lines only: 138 lines in the file, 30 expected lines missing
VK Ads (myTarget) — partner (reseller) lines only: 80 lines in the file, 64 expected lines missing
BIGO Ads — partner (reseller) lines only: 400 lines in the file, 296 expected lines missing
Yango Ads — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
Bidease — partner (reseller) lines only: 37 lines in the file, 12 expected lines missing
BlueSea — partner (reseller) lines only: 22 lines in the file, 15 expected lines missing
Display.io — partner (reseller) lines only: 11 lines in the file, 21 expected lines missing
DSP Exchange — partner (reseller) lines only: 272 lines in the file, 289 expected lines missing
Monetrix — partner (reseller) lines only: 60 lines in the file, 33 expected lines missing
Prado — partner (reseller) lines only: 19 lines in the file, 8 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 199 lines in the file, 170 expected lines missing
Start.io — partner (reseller) lines only: 84 lines in the file, 73 expected lines missing
Kidoz — partner (reseller) lines only: 15 lines in the file, 7 expected lines missing
CAS.ai — partner (reseller) lines only: 129 lines in the file, 36 expected lines missing
DSail — partner (reseller) lines only: 129 lines in the file, 36 expected lines missing

Invalid lines

Inmobi
mintegral
singularads, 548745, RESELLER
Facebook
Chartboost
Vungle
AdMob
Unity
TapJoy
IRON SOURCE
ADCOLONY
Applovin
Fyber
Verizon Media
Smaato

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

FAQ

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

Yes — https://synsidium.com/app-ads.txt has 6,305 lines (checked 20 Oct 2026).

Which ad networks does synsidium.com work with?

Its app-ads.txt lists InMobi, Mintegral, Smaato, Maticoo (zMaticoo), Chartboost, Liftoff Monetize (Vungle), Google AdMob, Unity Ads, PubMatic, TikTok Ad Network (Pangle), ironSource / LevelPlay, AppLovin and 18 more.

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