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.

simpledesign.ltd app-ads.txt check

simpledesign.ltd is missing out on higher CPMs: its app-ads.txt has 2 invalid lines. Buyers' crawlers skip invalid lines, so those sellers can't be verified.

Checked 20 Oct 2026. 4,799 lines, 3,894 unique records, 877 duplicates, 2 invalid lines, 37 ad networks detected.

Ad networks in simpledesign.ltd/app-ads.txt

Google AdMob — accounts pub-2890559903928937, pub-1980576454975917, pub-1831984866835672 and 4 more: 7 lines in the file
TripleLift — accounts 10344, 10344-EB: 2 lines in the file
Smaato — account 1100047005: 1 line in the file
PubMatic — accounts 160832, 160468, 167898 and 1 more: 4 lines in the file
Amazon Publisher Services — account 453666: 1 line in the file
OpenX — accounts 545628478, 559761026: 2 lines in the file
Index Exchange — account 195652: 1 line in the file
Meta Audience Network — account 1351359808972388: 1 line in the file
Yandex Ads — account 105307230: 148 lines in the file, 21 expected lines missing
VK Ads (myTarget) — accounts 29667334, 2791629: 175 lines in the file, 1 expected line missing
BIGO Ads — account 23174491: 400 lines in the file, 1 expected line missing
Liftoff Monetize (Vungle) — accounts 6553339a84a9bc00118131d6, 561e8d956b8d90f61a002a26: 390 lines in the file, 2 expected lines missing
TikTok Ad Network (Pangle) — account 5012830: 1 line in the file
InMobi — account 66d080da370b4f93bf751c938aa90fc9: 201 lines in the file, 71 expected lines missing
AppLovin — accounts 4fa7c5920f172b1a8c3c3b8e3d49021a, 8a9e07e6ceff26fa3f4cf820e1619369: 37 lines in the file
MobileFuse — account 4676: 1 line in the file
Bidmachine — account 1820: 400 lines in the file, 194 expected lines missing
Unity Ads — accounts 1504778, 155177800: 162 lines in the file
Mintegral — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
ironSource / LevelPlay — partner (reseller) lines only: 86 lines in the file, 39 expected lines missing
Chartboost — partner (reseller) lines only: 400 lines in the file, 342 expected lines missing
DT Exchange (Fyber) — partner (reseller) lines only: 300 lines in the file, 150 expected lines missing
Yango Ads — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
Bidease — partner (reseller) lines only: 33 lines in the file, 16 expected lines missing
BlueSea — partner (reseller) lines only: 22 lines in the file, 15 expected lines missing
Display.io — partner (reseller) lines only: 12 lines in the file, 20 expected lines missing
DSP Exchange — partner (reseller) lines only: 232 lines in the file, 329 expected lines missing
Madex — partner (reseller) lines only: 4 lines in the file, 14 expected lines missing
Maticoo (zMaticoo) — partner (reseller) lines only: 265 lines in the file, 179 expected lines missing
Monetrix — partner (reseller) lines only: 62 lines in the file, 31 expected lines missing
Prado — partner (reseller) lines only: 17 lines in the file, 10 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 400 lines in the file, 400 expected lines missing
HyprMX — partner (reseller) lines only: 172 lines in the file, 197 expected lines missing
Start.io — partner (reseller) lines only: 120 lines in the file, 37 expected lines missing
Kidoz — partner (reseller) lines only: 13 lines in the file, 9 expected lines missing
CAS.ai — partner (reseller) lines only: 140 lines in the file, 25 expected lines missing
DSail — partner (reseller) lines only: 140 lines in the file, 25 expected lines missing

Invalid lines

leanback.digital, ESS-D666 RESELLER, b1d30350acaf0176
b42d42eb28400efa,targetbetter.com, 6451, RESELLER

Corrected file: simpledesign.ltd app-ads.txt (fixed).

FAQ

Does simpledesign.ltd have an app-ads.txt?

Yes — https://simpledesign.ltd/app-ads.txt has 4,799 lines (checked 20 Oct 2026).

Which ad networks does simpledesign.ltd work with?

Its app-ads.txt lists Google AdMob, TripleLift, Smaato, PubMatic, Amazon Publisher Services, OpenX, Index Exchange, Meta Audience Network, Yandex Ads, VK Ads (myTarget), BIGO Ads, Liftoff Monetize (Vungle) and 25 more.

Is the app-ads.txt of simpledesign.ltd correct?