> Usually because several partners' blocks include the same seat: two mediation partners can resell through the same exchange account, and each partner's block lists it. Buyers treat repeated lines as one, so duplicates don't affect verification.

Source: https://appsupplyindex.com/fix/duplicate-app-ads-txt-lines · Updated: 2026-10-07 · License: CC BY 4.0 (App Supply Index)

---
[Learn](https://appsupplyindex.com/learn/) · How to fix

# Why does the same line appear more than once in app-ads.txt?

Updated Oct 7, 2026 · data from 12 App Store genres · top free + top grossing charts · US · iOS + Android

**Short answer:** Usually because several partners' blocks include the same seat: two mediation partners can resell through the same exchange account, and each partner's block lists it. Buyers treat repeated lines as one, so duplicates don't affect verification.

**520 of 883**
ad-monetized top US apps in this index have this finding (59%)

## Why it matters

Keeping each partner's block intact is reasonable: when you stop working with a partner, you remove its block without touching the others. The index shows which blocks each repeated line sits in.

## How to fix it

1. Nothing is required. If a line is repeated within the same partner's block, one copy is enough.

## Apps with this finding

Each report lists the exact lines involved.

- [Authenticator ℠ App](https://appsupplyindex.com/app/ios-6754900760) · BEGAMOB GLOBAL LIMITED
- [iCardiac: Heart Rate & Health](https://appsupplyindex.com/app/ios-6468660073) · BEGAMOB GLOBAL LIMITED
- [Universal Remote TV Control ·](https://appsupplyindex.com/app/ios-1581765635) · BEGAMOB GLOBAL LIMITED
- [FaceVital: Health Monitor](https://appsupplyindex.com/app/ios-6773569672) · BEGAMOB GLOBAL LIMITED
- [Glucera: Blood Sugar Tracker](https://appsupplyindex.com/app/ios-6796661353) · BEGAMOB GLOBAL LIMITED
- [Meowdoku!](https://appsupplyindex.com/app/ios-6761760135) · OAKEVER GAMES PTE. LTD.
- [Vita Mahjong](https://appsupplyindex.com/app/ios-6468921495) · VITA STUDIO PTE. LTD.
- [Amaze GO!](https://appsupplyindex.com/app/ios-6758326278) · OAKEVER GAMES PTE. LTD.
- [Colorever: Gem Art Puzzle](https://appsupplyindex.com/app/ios-6761757565) · OAKEVER GAMES PTE. LTD.
- [Mystery Town: Merge Games](https://appsupplyindex.com/app/ios-6503603603) · Cedar Co., Limited
- [Jigsawcard Solitaire Puzzle](https://appsupplyindex.com/app/ios-6754900673) · OAKEVER GAMES PTE. LTD.
- [Castle Busters](https://appsupplyindex.com/app/ios-6746328263) · Voodoo

[All apps →](https://appsupplyindex.com/apps)

## Questions

### Does a duplicate line lower my score?

No. It's shown for information only.

## Related

- [What is app-ads.txt?](https://appsupplyindex.com/learn/what-is-app-ads-txt)
- [DIRECT vs RESELLER](https://appsupplyindex.com/learn/direct-vs-reseller)
- [How the index checks files](https://appsupplyindex.com/methodology)

Based on the [IAB Tech Lab
ads.txt/app-ads.txt](https://iabtechlab.com/ads-txt/) and [sellers.json](https://iabtechlab.com/sellers-json/)
specifications. Numbers are automated observations of public files on the date above.