Observed arrival · 2026-10-09
App Supply Index: an audit of app ad-supply disclosures
An open audit of app-ads.txt seller claims, checked against ad systems’ sellers.json files.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- App publishers auditing their ad-supply disclosures
- Worth noticing
- Apps without app-ads.txt are not graded, and 186 files with fewer than five lines verifiable against sellers.json are excluded.
Field notes
The site says 624 apps were graded from 520 distinct app-ads.txt files, since apps from one developer may share a file. Grades track the share of problem lines rather than file size; apps without app-ads.txt and 186 files with fewer than five lines verifiable against sellers.json are excluded. It also links to an open-data download marked CC BY.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade
One card from the complete issue