Busuu: Learn & Speak Languages
by Busuu · com.busuu.android.enc
Most of the 229 lines in Busuu: Learn & Speak Languages's app-ads.txt (busuu.com) are RESELLER lines: 223 against 6 DIRECT, across 71 ad systems. 128 of 202 lines checked against sellers.json match; 56 name a seller ID the network does not list, 5 declare the wrong seller type. The file last changed on 3 October 2026.
Store data
- Rating
- 4.65
- Installs
- 50M+
- Category
- Education
- Contains ads
- Yes
1,235,148 ratings
Offers in-app purchases
app-ads.txt
- Domain
- busuu.com
- Status
- Found (200)
- Lines
- 229
- DIRECT / RESELLER
- 6 / 223
- Parse errors
- 13
- Last fetched
- Oct 13, 2026
- Last changed
- Oct 3, 2026
sellers.json cross-check
229 lines checked
Verified
128
Errors
61
Warnings
16
- Seller ID not found 56
- RESELLER but publisher 5
- Seller type BOTH 13
- No sellers.json 3
- Unchecked 24
Declared supply tree
6 direct accounts across 5 direct sellers · 113 resellers buying from them · 110 not matched
| Direct seller | Accounts | Resold by | Issues |
|---|---|---|---|
| ironsrc.com | 1 | 33 resellers: pubmatic.com, improvedigital.com, rubiconproject.com … | 0 |
| unity.com | 1 | 33 resellers: pubmatic.com, rubiconproject.com, loopme.com … | 0 |
| applovin.com | 1 | 10 resellers: pubmatic.com, media.net, loopme.com … | 1 |
| google.com | 2 | 1 reseller: pubmatic.com | 1 |
| yabbi.me | 1 | 1 reseller: betweendigital.com | 0 |
110 resellers, intermediary not matched to a direct seller of this app (account not found in the ad system's sellers.json: 54; the intermediary's domain is not a direct seller of this app: 25; the ad system publishes no usable sellers.json: 3; not cross-checked yet: 23; sellers.json lists the account as a publisher, not an intermediary: 5).
Seller IDs the networks do not list
56 lines of this app-ads.txt name an account ID that the ad system's sellers.json does not contain; the first 15 in file order. Usually a stale line or a typo in the ID. How to fix it
| Line | Ad system | Account ID | Relationship |
|---|---|---|---|
| 3 | google.com | pub-3940256099942544 | DIRECT |
| 8 | applovin.com | f6d861015327878951026a5964b63d2f | DIRECT |
| 22 | adbility-media.com | 187 | RESELLER |
| 23 | advertising.com | 8693 | RESELLER |
| 27 | appnexus.com | 2480 | RESELLER |
| 28 | appnexus.com | 7445 | RESELLER |
| 55 | smartclip.net | 411 | RESELLER |
| 57 | smartclip.net | 9394 | RESELLER |
| 59 | stroeer.com | 17355 | RESELLER |
| 62 | video.unrulymedia.com | 3169196794 | RESELLER |
| 64 | yandex.com | 37982190 | RESELLER |
| 66 | appnexus.com | 13074 | RESELLER |
| 79 | indexexchange.com | 197137 | RESELLER |
| 85 | yeahmobi.com | 5135347 | RESELLER |
| 87 | app-stock.com | 256917 | RESELLER |
New to these files? What is app-ads.txt · Network directory · Glossary
Last crawled Tue, Oct 13, 2026 6:54 AM. Data derived from the public store listing, the developer's app-ads.txt and the ad systems' sellers.json files.