QANDA: AI Math & Study Helper
by Mathpresso · 1270676408
Most of the 1,031 lines in QANDA: AI Math & Study Helper's app-ads.txt (qanda.ai) are RESELLER lines: 1,012 against 19 DIRECT, across 195 ad systems. 557 of 959 lines checked against sellers.json match; 281 name a seller ID the network does not list, 47 declare the wrong seller type. The file last changed on 6 October 2026; the same file covers 3 apps of this developer.
QANDA: AI Math & Study Helper shares its app-ads.txt (qanda.ai) with QANDA: AI Math & Study Helper (Google Play), whose page carries the full analysis of the file.
Store data
- Rating
- 3.53
- Installs
- —
- Category
- Education
- Contains ads
- —
779 ratings
Not published by Apple
app-ads.txt
- Domain
- qanda.ai
- Status
- Found (200)
- Lines
- 1,031
- DIRECT / RESELLER
- 19 / 1,012
- Parse errors
- 130
- Last fetched
- Oct 13, 2026
- Last changed
- Oct 6, 2026
sellers.json cross-check
1,031 lines checked
Verified
557
Errors
328
Warnings
96
- Seller ID not found 281
- DIRECT but intermediary 9
- RESELLER but publisher 38
- Seller type BOTH 70
- Confidential seller 4
- No sellers.json 22
- Unchecked 50
Declared supply tree
19 direct accounts across 18 direct sellers · 518 resellers buying from them · 494 not matched
| Direct seller | Accounts | Resold by | Issues |
|---|---|---|---|
| fyber.com | 1 | 167 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 | |||
494 resellers, intermediary not matched to a direct seller of this app (the ad system publishes no usable sellers.json: 22; 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).
Seller IDs the networks do not list
281 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 |
|---|---|---|---|
| 11 | adform.com | 2967 | RESELLER |
| 17 | advertising.com | 28650 | RESELLER |
| 24 | appnexus.com | 13258 | RESELLER |
| 27 | appnexus.com | 13956 | RESELLER |
| 31 | appnexus.com | 15980 | RESELLER |
| 34 | axonix.com | 59163 | RESELLER |
| 44 | contextweb.com | 562329 | RESELLER |
| 45 | contextweb.com | 562499 | RESELLER |
| 47 | contextweb.com | 562762 | RESELLER |
| 49 | contextweb.com | 562827 | RESELLER |
| 50 | contextweb.com | 563321 | RESELLER |
| 51 | contextweb.com | 563521 | RESELLER |
| 52 | contextweb.com | 563539 | RESELLER |
| 53 | contextweb.com | 563595 | RESELLER |
| 54 | contextweb.com | 563604 | RESELLER |
More apps from Mathpresso
New to these files? What is app-ads.txt · Network directory · Glossary
Last crawled Mon, Oct 12, 2026 4:54 PM. Data derived from the public store listing, the developer's app-ads.txt and the ad systems' sellers.json files.