Stoqlab

Ad system

groundtruth.com

Most of the 102,150 apps that declare groundtruth.com reach it through a reseller: 100% have a RESELLER line, 0% a DIRECT one (13,318 files, 403 of them through Smaato's account). 97% of the 13,734 lines checked name an account its sellers.json (37 sellers) does not list. 1 seller left its sellers.json in the last 30 days.

Check an app-ads.txt Open in dashboard
Apps declaring it
102,150

36 DIRECT · 102,144 RESELLER

Sellers in sellers.json
37

0% confidential

Lines verified
2.9%

416 of 14,424 checked lines

Lines with errors
14,008

14,424 lines in total

Avg. supply path score
49.0 / 100

106,486 apps scored

App counts, the sellers.json breakdown and the directory ranking are as of , recomputed daily (the same numbers as the directory). Line counts are recounted every 10 minutes. sellers.json last read 13 October 2026. The supply path score sums up how short and clean the declared paths are, 0 to 100 (how it is computed).

How to add groundtruth.com to app-ads.txt

One line per account, in the app-ads.txt at the root of the domain your App Store and Google Play listings name as the developer website.

groundtruth.com, YOUR_ACCOUNT_ID, DIRECT, 81cbf0a75a5e0e9a
groundtruth.com, YOUR_ACCOUNT_ID, RESELLER, 81cbf0a75a5e0e9a
  • Field 1: groundtruth.com, the domain groundtruth.com uses in app-ads.txt.
  • Field 2: your account ID with groundtruth.com. It must equal the seller_id in groundtruth.com's sellers.json.
  • Field 3: DIRECT if you hold the account, RESELLER if a partner holds it and sells your inventory. DIRECT vs RESELLER
  • Field 4 (optional): 81cbf0a75a5e0e9a, the certification authority ID on 99% of the lines naming groundtruth.com.

sellers.json at a glance

Status
Published
Sellers listed
37
Confidential
0 (0%)
Passthrough
0
Removed, last 30 days
1
Last read
Oct 13, 2026
  • PUBLISHER15
  • INTERMEDIARY22
  • BOTH0

Cross-check of lines naming groundtruth.com

  • Verified 416
  • Seller ID not found 14,008
  • DIRECT but intermediary 0
  • RESELLER but publisher 0
  • Seller type BOTH 0
  • Confidential seller 0
  • No sellers.json 0
  • Unchecked 0

Every line naming groundtruth.com is looked up in its sellers.json. What each status means

Common errors with groundtruth.com lines

  • Seller ID not found 14,008 lines

    Ask groundtruth.com 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.

Common app-ads.txt errors and how to fix them

Intermediaries most declared as RESELLER

Accounts on groundtruth.com that its sellers.json lists as INTERMEDIARY or BOTH, by the number of app-ads.txt files declaring them. Confidential sellers are left out.

Seller domainTypeFiles
smaato.com INTERMEDIARY 403
smartadserver.com INTERMEDIARY 3

Apps that declare groundtruth.com

AppStoreRelationshipStatus
Hunter Assassin Hunter Assassin
 Android RESELLER Live
File Manager File Manager
 Android RESELLER Live
Getcontact Getcontact
 Android RESELLER Live
1945 Air Force: Plane Shooter 1945 Air Force: Plane Shooter
 Android RESELLER Live
Grow Empire: Rome Grow Empire: Rome
 Android RESELLER Live
Episode - Choose Your Story Episode - Choose Your Story
 Android RESELLER Live
Modern Combat 5: mobile FPS Modern Combat 5: mobile FPS
 Android RESELLER Live
ixigo Train, Bus, Metro Ticket ixigo Train, Bus, Metro Ticket
 Android RESELLER Live
ESPN: Live Sports & Scores ESPN: Live Sports & Scores
 iOS RESELLER Live
Agar.io Agar.io
 Android RESELLER Live
Instabridge: WiFi Hotspot Map Instabridge: WiFi Hotspot Map
 Android RESELLER Live
迷你世界 迷你世界
 iOS RESELLER Live
Mini Militia - War.io Mini Militia - War.io
 Android RESELLER Live
ShareChat Status, Video & Live ShareChat Status, Video & Live
 Android RESELLER Live
StarMaker: Sing Karaoke Songs StarMaker: Sing Karaoke Songs
 Android RESELLER Live
Happy Color®: Color by Number Happy Color®: Color by Number
 Android RESELLER Live
TeraBox: 1TB Cloud & AI Space TeraBox: 1TB Cloud & AI Space
 Android RESELLER Live
MONOPOLY GO! MONOPOLY GO!
 iOS RESELLER Live
Royal Match Royal Match
 iOS RESELLER Live
Bible For Women-Holy Bible KJV Bible For Women-Holy Bible KJV
 Android RESELLER Live

Questions about groundtruth.com

Does groundtruth.com publish a sellers.json?

Yes. Its file at https://www.groundtruth.com/sellers.json listed 37 sellers when we last read it on 13 October 2026: 15 publishers, 22 intermediaries and 0 listed as both; 0% are confidential.

How many apps declare groundtruth.com in app-ads.txt?

102,150 apps in Stoqlab's data (delisted apps included) declare groundtruth.com: 36 with at least one DIRECT line and 102,144 with at least one RESELLER line, across 13,318 app-ads.txt files, as of 13 October 2026 (recounted daily).

What is the certification authority ID for groundtruth.com?

99% of the app-ads.txt lines naming groundtruth.com carry "81cbf0a75a5e0e9a" 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.

Why do groundtruth.com lines fail verification?

Of 14,424 lines naming groundtruth.com, 14,008 contradict its sellers.json. The most common case is "Seller ID not found", on 14,008 lines. Ask groundtruth.com 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.

Not sure whether your line should say DIRECT or RESELLER? DIRECT vs RESELLER in app-ads.txt

Sources: the public app-ads.txt files of tracked apps and the sellers.json of groundtruth.com. Something wrong? Tell us.