Tappx

Add one line for each account Tappx gives you: "tappx.com, YOUR_ACCOUNT_ID, DIRECT, 9f375a07da0318ec". Use DIRECT when you hold the account yourself and RESELLER when a partner holds it and sells your inventory through tappx.com. The account ID must be the seller_id Tappx lists for you in its sellers.json; Tappx will give it to you. Put the file at the root of the domain named as your developer website in the App Store and Google Play listings.

Yes. Its file at https://tappx.com/sellers.json listed 418 sellers when we last read it on 9 October 2026: 418 publishers, 0 intermediaries and 0 listed as both; 0% are confidential.

62,761 apps in Stoqlab's data (delisted apps included) declare tappx.com: 29,052 with at least one DIRECT line and 45,854 with at least one RESELLER line, across 7,204 app-ads.txt files. Counts are recomputed daily.

99% of the app-ads.txt lines naming tappx.com carry "9f375a07da0318ec" in the fourth field. The field is optional; the IAB Tech Lab ads.txt 1.1 specification says identifiers in sellers.json supersede it, so a missing or different value does not make a line invalid.

Of 11,174 lines naming tappx.com, 10,105 contradict its sellers.json. The most common case is "Seller ID not found" (9,989 lines): Ask Tappx for the account ID it lists for you in its sellers.json, correct the line, or remove it if you no longer work with them. Buyers that check sellers.json drop these paths.

DIRECT means the publisher owns the account; RESELLER means an intermediary sells the inventory on the publisher's behalf. DIRECT lines should match a PUBLISHER entry in the network's sellers.json, RESELLER lines an INTERMEDIARY entry.