Flashcards World
by Andev · flashcards.words.words
The app-ads.txt behind Flashcards World (flashcards.world) declares 8 DIRECT lines and 4 RESELLER lines naming 10 ad systems. 5 of the 10 lines checked name a seller ID the network's sellers.json does not list, so buyers that check drop those paths. The file last changed on 6 October 2026; the same file covers 2 apps of this developer.
Store data
- Rating
- 4.63
- Installs
- 5M+
- Category
- Education
- Contains ads
- Yes
84,722 ratings
Offers in-app purchases
app-ads.txt
- Domain
- flashcards.world
- Status
- Found (200)
- Lines
- 12
- DIRECT / RESELLER
- 8 / 4
- Parse errors
- 0
- Last fetched
- Oct 11, 2026
- Last changed
- Oct 6, 2026
sellers.json cross-check
12 lines checked
Verified
1
Errors
7
Warnings
3
- Seller ID not found 5
- DIRECT but intermediary 2
- Seller type BOTH 1
- Confidential seller 1
- No sellers.json 1
- Unchecked 1
Declared supply tree
8 direct accounts across 7 direct sellers · 1 reseller buying from them · 3 not matched
| Direct seller | Accounts | Resold by | Issues |
|---|---|---|---|
| google.com | 1 | 1 reseller: pubmatic.com | 0 |
| lijit.com | 2 | — | 2 |
| media.net | 1 | — | 1 |
| onetag.com | 1 | — | 1 |
| rhythmone.com | 1 | — | 0 |
| sovrn.com | 1 | — | 0 |
| video.unrulymedia.com | 1 | — | 1 |
3 resellers, intermediary not matched to a direct seller of this app (the intermediary's domain is not a direct seller of this app: 1; account not found in the ad system's sellers.json: 2).
Seller IDs the networks do not list
5 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 |
|---|---|---|---|
| 6 | indexexchange.com | 194273 | RESELLER |
| 7 | rubiconproject.com | 24442 | RESELLER |
| 11 | video.unrulymedia.com | 895733750 | DIRECT |
| 13 | lijit.com | 357833 | DIRECT |
| 14 | lijit.com | 357833-eb | DIRECT |
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New to these files? What is app-ads.txt · Network directory · Glossary
Last crawled Sun, Oct 11, 2026 9:01 PM. Data derived from the public store listing, the developer's app-ads.txt and the ad systems' sellers.json files.