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.

smax.com app-ads.txt check

smax.com achieves the best ad optimization: its app-ads.txt has no errors and matches what its 2 ad networks expect (100% of 2 lines).

Checked 19 Oct 2026. 154 lines, 114 unique records, 10 duplicates, 0 invalid lines, 10 ad networks detected.

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

Amazon Publisher Services — account 47b3bdce-3a0c-491e-b9d2-91d4e72a5385: 1 line in the file
TripleLift — account 3787: 1 line in the file
Mintegral — partner (reseller) lines only: 34 lines in the file, 400 expected lines missing
Liftoff Monetize (Vungle) — partner (reseller) lines only: 16 lines in the file, 374 expected lines missing
Chartboost — partner (reseller) lines only: 15 lines in the file, 400 expected lines missing
DT Exchange (Fyber) — partner (reseller) lines only: 12 lines in the file, 400 expected lines missing
Yango Ads — partner (reseller) lines only: 41 lines in the file, 400 expected lines missing
DSP Exchange — partner (reseller) lines only: 24 lines in the file, 400 expected lines missing
Verve (PubNative) — partner (reseller) lines only: 11 lines in the file, 400 expected lines missing
Bidmachine — partner (reseller) lines only: 34 lines in the file, 400 expected lines missing

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

FAQ

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

Yes — https://smax.com/app-ads.txt has 154 lines (checked 19 Oct 2026).

Which ad networks does smax.com work with?

Its app-ads.txt lists Amazon Publisher Services, TripleLift, Mintegral, Liftoff Monetize (Vungle), Chartboost, DT Exchange (Fyber), Yango Ads, DSP Exchange, Verve (PubNative), Bidmachine.

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