QANDA: AI Math & Study Helper
by Mathpresso · com.mathpresso.qanda
Store data
- Rating
- 3.76
- Installs
- 50M+
- Category
- Education
- Contains ads
- Yes
781,296 ratings
Offers in-app purchases
app-ads.txt
- Domain
- qanda.ai
- Status
- Found (200)
- Lines
- 1,031
- DIRECT / RESELLER
- 19 / 1,012
- Parse errors
- 130
- Last fetched
- Oct 10, 2026
- Last changed
- Oct 6, 2026
sellers.json cross-check
1,031 lines checked
Verified
556
Errors
328
Warnings
97
- Seller ID not found 281
- DIRECT but intermediary 9
- RESELLER but publisher 38
- Seller type BOTH 70
- Confidential seller 4
- No sellers.json 23
- Unchecked 50
Declared supply tree
19 direct accounts across 18 direct sellers · 517 resellers buying from them · 495 not matched
| Direct seller | Accounts | Resold by | Issues |
|---|---|---|---|
| fyber.com | 1 | 166 resellers: pubmatic.com, rubiconproject.com, improvedigital.com … | 0 |
| mintegral.com | 1 | 53 resellers: pubmatic.com, conversantmedia.com, video.unrulymedia.com … | 1 |
| toponad.com | 2 | 14 resellers: pubmatic.com, lijit.com, singularads.com … | 2 |
| smaato.com | 1 | 12 resellers: pubmatic.com, mlion.io, conversantmedia.com … | 1 |
| opera.com | 1 | 11 resellers: pubmatic.com, yeahmobi.com, lijit.com … | 1 |
| zmaticoo.com | 1 | 7 resellers: opera.com, admanmedia.com, smartadserver.com … | 1 |
| admatic.com.tr | 1 | 1 reseller: rubiconproject.com | 1 |
| vidoomy.com | 1 | 1 reseller: adform.com | 1 |
| webeyemob.com | 1 | 1 reseller: lacunads.com | 1 |
| admixer.net | 1 | — | 1 |
| facebook.com | 1 | — | 0 |
| google.com | 1 | — | 0 |
| + 6 more direct sellers in the full tree | |||
495 resellers, intermediary not matched to a direct seller of this app (the ad system publishes no usable sellers.json: 23; account not found in the ad system's sellers.json: 276; the intermediary's domain is not a direct seller of this app: 106; sellers.json lists the account as a publisher, not an intermediary: 38; not cross-checked yet: 48; the seller is confidential in sellers.json: 4).
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New to these files? What is app-ads.txt · Network directory · Glossary
Last crawled Fri, Oct 9, 2026 9:30 PM. Data derived from the public store listing, the developer's app-ads.txt and the ad systems' sellers.json files.