Stoqlab

Ad system

undertone.com

Most of the 135,833 apps that declare undertone.com reach it through a reseller: 100% have a RESELLER line, 4.1% a DIRECT one (20,025 files, 15,368 of them through unity.com's account). Of 38,868 lines checked against its sellers.json (139 sellers), 66% match, 15% name an unlisted account and 18% declare the wrong seller type.

Check an app-ads.txt Open in dashboard
Apps declaring it
135,833

5,506 DIRECT · 135,423 RESELLER

Sellers in sellers.json
139

0% confidential

Lines verified
66%

26,923 of 40,743 checked lines

Lines with errors
13,362

40,743 lines in total

Avg. supply path score
51.1 / 100

141,660 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 undertone.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.

undertone.com, YOUR_ACCOUNT_ID, DIRECT
undertone.com, YOUR_ACCOUNT_ID, RESELLER
  • Field 1: undertone.com, the domain undertone.com uses in app-ads.txt.
  • Field 2: your account ID with undertone.com. It must equal the seller_id in undertone.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): a certification authority ID. Most lines naming undertone.com carry none, or different ones, so we do not suggest one.

sellers.json at a glance

Status
Published
Sellers listed
139
Confidential
0 (0%)
Passthrough
0
Removed, last 30 days
0
Last read
Oct 13, 2026
  • PUBLISHER110
  • INTERMEDIARY21
  • BOTH8

Cross-check of lines naming undertone.com

  • Verified 26,923
  • Seller ID not found 6,154
  • DIRECT but intermediary 16
  • RESELLER but publisher 7,192
  • Seller type BOTH 458
  • Confidential seller 0
  • No sellers.json 0
  • Unchecked 0

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

Common errors with undertone.com lines

  • RESELLER but publisher 7,192 lines

    If the account is yours, declare it DIRECT. If a partner holds it, ask undertone.com why the account is listed as PUBLISHER.

  • Seller ID not found 6,154 lines

    Ask undertone.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.

  • Seller type BOTH 458 lines

    The account is listed as BOTH, so sellers.json alone cannot tell a buyer which relationship applies. Nothing to fix on your side; buyers usually look at the seller's domain.

  • DIRECT but intermediary 16 lines

    If a partner holds this account and resells your inventory, the line should say RESELLER. If the account is yours, ask undertone.com to list it as PUBLISHER.

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

Intermediaries most declared as RESELLER

Accounts on undertone.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
unity.com INTERMEDIARY 15,368
fyber.com INTERMEDIARY 8,233
sendtonews.com INTERMEDIARY 577
unrulymedia.com INTERMEDIARY 449
hcodemedia.com BOTH 104
nextmillennium.io INTERMEDIARY 88
nglcollective.com BOTH 45

Apps that declare undertone.com

AppStoreRelationshipStatus
WPS Office-PDF, Word, Sheet WPS Office-PDF, Word, Sheet
 Android RESELLER Live
Brain Out®: Can you pass it? Brain Out®: Can you pass it?
 Android RESELLER Live
Remini - AI Photo Enhancer Remini - AI Photo Enhancer
 Android RESELLER Live
Idle Miner Tycoon: Gold Games Idle Miner Tycoon: Gold Games
 Android RESELLER Live
Pixel Gun 3D - FPS Shooter Pixel Gun 3D - FPS Shooter
 Android RESELLER Live
The Sims™ FreePlay The Sims™ FreePlay
 Android RESELLER Live
Plants vs. Zombies™ Plants vs. Zombies™
 Android RESELLER Live
Block Blast! Block Blast!
 Android RESELLER Live
SimCity BuildIt SimCity BuildIt
 Android RESELLER Live
DramaBox - Stream Drama Shorts DramaBox - Stream Drama Shorts
 Android RESELLER Live
Opera: Private Web Browser Opera: Private Web Browser
 Android RESELLER Live
Lark Player:Music Player & MP3 Lark Player:Music Player & MP3
 Android RESELLER Live
µTorrent®- Torrent Downloader µTorrent®- Torrent Downloader
 Android RESELLER Live
CSR 2 Realistic Drag Racing CSR 2 Realistic Drag Racing
 Android DIRECT + RESELLER Live
Fruit Ninja® Fruit Ninja®
 Android RESELLER Live
Need for Speed™ No Limits Need for Speed™ No Limits
 Android RESELLER Live
War Robots Multiplayer Battles War Robots Multiplayer Battles
 Android RESELLER Live
Banana Kong Banana Kong
 Android RESELLER Live
Temple Run Temple Run
 Android RESELLER Live
Cooking Fever: Restaurant Game Cooking Fever: Restaurant Game
 Android RESELLER Live

Questions about undertone.com

Does undertone.com publish a sellers.json?

Yes. Its file at https://undertone.com/sellers.json listed 139 sellers when we last read it on 13 October 2026: 110 publishers, 21 intermediaries and 8 listed as both; 0% are confidential.

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

135,833 apps in Stoqlab's data (delisted apps included) declare undertone.com: 5,506 with at least one DIRECT line and 135,423 with at least one RESELLER line, across 20,025 app-ads.txt files, as of 13 October 2026 (recounted daily).

Why do undertone.com lines fail verification?

Of 40,743 lines naming undertone.com, 13,362 contradict its sellers.json. The most common case is "RESELLER but publisher", on 7,192 lines. If the account is yours, declare it DIRECT. If a partner holds it, ask undertone.com why the account is listed as PUBLISHER.

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 undertone.com. Something wrong? Tell us.