Simpia – Learn piano by songs
by SMULIE COMPANY LIMITED · 6444191617
Most of the 1,297 lines in Simpia – Learn piano by songs's app-ads.txt (smulie.io) are RESELLER lines: 1,186 against 111 DIRECT, across 199 ad systems. 416 of the 1,114 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 3 apps of this developer.
Store data
- Rating
- 4.66
- Installs
- —
- Category
- Education
- Contains ads
- —
562 ratings
Not published by Apple
app-ads.txt
- Domain
- smulie.io
- Status
- Found (200)
- Lines
- 1,297
- DIRECT / RESELLER
- 111 / 1,186
- Parse errors
- 200
- Last fetched
- Oct 6, 2026
- Last changed
- Oct 6, 2026
sellers.json cross-check
1,297 lines checked
Verified
545
Errors
486
Warnings
127
- Seller ID not found 416
- DIRECT but intermediary 19
- RESELLER but publisher 51
- Seller type BOTH 76
- Confidential seller 7
- No sellers.json 44
- Unchecked 139
Declared supply tree
111 direct accounts across 73 direct sellers · 516 resellers buying from them · 670 not matched
| Direct seller | Accounts | Resold by | Issues |
|---|---|---|---|
| ironsrc.com | 2 | 64 resellers: pubmatic.com, rubiconproject.com, openx.com … | 0 |
| smaato.com | 4 | 44 resellers: bidmachine.io, smaato.com, triplelift.com … | 2 |
| fyber.com | 2 | 34 resellers: improvedigital.com, appnexus.com, sharethrough.com … | 0 |
| inmobi.com | 2 | 34 resellers: pubmatic.com, rubiconproject.com, smaato.com … | 1 |
| pubnative.net | 1 | 25 resellers: bidmachine.io, gitberry.com, pubmatic.com … | 0 |
| unity.com | 2 | 23 resellers: pubmatic.com, appnexus.com, videoheroes.tv … | 0 |
| algorix.co | 1 | 23 resellers: pubmatic.com, peak226.com, betweendigital.com … | 0 |
| vungle.com | 2 | 18 resellers: adelement.com, yeahmobi.com, loopme.com … | 1 |
| anzu.io | 1 | 17 resellers: lkqd.net, loopme.com, sharethrough.com … | 0 |
| mintegral.com | 1 | 16 resellers: pubmatic.com, loopme.com, video.unrulymedia.com … | 0 |
| smartadserver.com | 6 | 12 resellers: pubmatic.com, admanmedia.com, axonix.com … | 5 |
| adcolony.com | 1 | 12 resellers: pubmatic.com, rubiconproject.com, lunamedia.io … | 0 |
| + 61 more direct sellers in the full tree | |||
670 resellers, intermediary not matched to a direct seller of this app (account not found in the ad system's sellers.json: 374; the ad system publishes no usable sellers.json: 39; the intermediary's domain is not a direct seller of this app: 74; not cross-checked yet: 126; sellers.json lists the account as a publisher, not an intermediary: 51; the seller is confidential in sellers.json: 6).
Seller IDs the networks do not list
416 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 |
|---|---|---|---|
| 5 | advertising.com | 8693 | RESELLER |
| 8 | appnexus.com | 2480 | RESELLER |
| 9 | appnexus.com | 3368 | RESELLER |
| 10 | appnexus.com | 7445 | RESELLER |
| 12 | google.com | pub-7452201096415972 | RESELLER |
| 15 | indexexchange.com | 185996 | RESELLER |
| 22 | openx.com | 540311484 | RESELLER |
| 26 | pubmatic.com | 156372 | RESELLER |
| 34 | rubiconproject.com | 16676 | RESELLER |
| 37 | rubiconproject.com | 20942 | RESELLER |
| 40 | smartclip.net | 411 | RESELLER |
| 41 | smartclip.net | 9394 | RESELLER |
| 47 | stroeer.com | 17355 | RESELLER |
| 48 | undertone.com | 3635 | RESELLER |
| 50 | video.unrulymedia.com | 3169196794 | RESELLER |
New to these files? What is app-ads.txt · Network directory · Glossary
Last crawled Mon, Oct 12, 2026 4:55 PM. Data derived from the public store listing, the developer's app-ads.txt and the ad systems' sellers.json files.