The earlier posts in this series used Hacker News and npm. This one counts questions. Stack Overflow has a public API that returns the number of new questions for any tag in any date range, so I pulled quarterly counts for six mobile tags, swiftui , uikit , jetpack-compose , kotlin-multiplatform , react-native and flutter , plus the site total as a control, from Q1 2022 to Q3 2026.

Every tag fell by 95% or more. So did the site: from 356,065 new questions in Q1 2022 to 3,160 in Q3 2026, a drop of 99.1%. The mobile tags did not escape it, so question volume stopped working as a popularity signal. What is left is the mix between them.

What the counts say

New questions per quarter, from the Stack Exchange API. "Native" is swiftui , uikit , jetpack-compose and kotlin-multiplatform added together. "Cross" is react-native and flutter added together.…