Learn English - Grammar, Vocab
by VU DUONG · 988305170
Most of the 39 lines in Learn English - Grammar, Vocab's app-ads.txt (duongvu214.github.io) are RESELLER lines: 36 against 3 DIRECT, across 28 ad systems. 18 of 30 lines checked against sellers.json match; 8 name a seller ID the network does not list, 1 declare the wrong seller type. The file last changed on 5 October 2026; the same file covers 16 apps of this developer.
Store data
- Rating
- 4.42
- Installs
- —
- Category
- Education
- Contains ads
- —
256 ratings
Not published by Apple
app-ads.txt
- Domain
- duongvu214.github.io
- Status
- Found (200)
- Lines
- 39
- DIRECT / RESELLER
- 3 / 36
- Parse errors
- 0
- Last fetched
- Oct 12, 2026
- Last changed
- Oct 5, 2026
sellers.json cross-check
39 lines checked
Verified
18
Errors
9
Warnings
3
- Seller ID not found 8
- RESELLER but publisher 1
- Seller type BOTH 3
- Unchecked 9
Declared supply tree
3 direct accounts across 3 direct sellers · 15 resellers buying from them · 21 not matched
| Direct seller | Accounts | Resold by | Issues |
|---|---|---|---|
| unity.com | 1 | 14 resellers: pubmatic.com, rubiconproject.com, bidmachine.io … | 1 |
| facebook.com | 1 | — | 0 |
| google.com | 1 | — | 0 |
21 resellers, intermediary not matched to a direct seller of this app (not cross-checked yet: 8; the intermediary's domain is not a direct seller of this app: 5; account not found in the ad system's sellers.json: 7; sellers.json lists the account as a publisher, not an intermediary: 1).
Seller IDs the networks do not list
8 lines of this app-ads.txt name an account ID that the ad system's sellers.json does not contain. Usually a stale line or a typo in the ID. How to fix it
| Line | Ad system | Account ID | Relationship |
|---|---|---|---|
| 2 | unity.com | 3013740 | DIRECT |
| 14 | openx.com | 540871654 | RESELLER |
| 18 | rubiconproject.com | 21526 | RESELLER |
| 29 | kidoz.net | 19692013 | RESELLER |
| 33 | indexexchange.com | 194080 | RESELLER |
| 36 | video.unrulymedia.com | 3630748062 | RESELLER |
| 37 | telaria.com | rwd19-3013740 | RESELLER |
| 38 | tremorhub.com | rwd19-3013740 | RESELLER |
More apps from VU DUONG
New to these files? What is app-ads.txt · Network directory · Glossary
Last crawled Sun, Oct 11, 2026 3:56 PM. Data derived from the public store listing, the developer's app-ads.txt and the ad systems' sellers.json files.