Data infrastructure / open access
Public data catalog
Download the records behind the research, including market shares, concentration measures, official events, and source references. Coverage and missing values are documented for each dataset.
Source records move through market definitions, concentration calculations, confidence labels, and public data endpoints — 45 source records, 12 market profiles, 235808 record rows plus a 1 row summary endpoint across 62 API endpoints.
Record rows
235,808
Sources
45
Endpoints
62
Aug 15, 2026
Latest source review
62
Dataset families
4
Source types
Market-definition atlas
What market is this metric measuring?
Inspect each product boundary, geography, denominator, proxy choice, and permitted comparison use before treating concentration values as economic evidence.
Selected definition contract
U.S. mobile operating-system web usage
Product boundary
Mobile operating-system web usage detected in mobile page views
Geographic boundary
United States
Measurement basis
StatCounter mobile operating-system page-view share
Denominator
U.S. mobile page views recorded on StatCounter-tracked websites in each pinned April snapshot
Included
Every operating-system category published in the source row, including small and Other categories
Excluded
Device sales, installed base, active devices, app-store activity, operating-system revenue, desktop usage, and tying conduct
Method and limitations
Compute HHI from the complete category distribution in each same-month StatCounter U.S. mobile export and retain source labels without combining operator families.
Page-view usage is a public web-analytics proxy. It does not measure devices, users, sales, revenue, or a legally defined mobile operating-system market.
Boundary source
Mobile operating system market share in United States of America, April 2023-April 2026
StatCounter Global Stats · accessed 2026-07-20
Open data needs public interpretation.
The API is a starting point, not a legal conclusion. Pair downloads with methodology notes, source records, and the data-gaps report when citing market concentration.