a16z: App supply quadrupled in the agentic coding era, but demand stayed flat
APPSO · wechat · 2026-09-21
a16z's data weekly delivers a cold shower to the vibecoding startup wave: app supply exploded while user demand didn't move.
Key data:
- MIT/UPenn research marks Feb 2025 as the start of the "agentic coding era": monthly new iOS apps surged from 40K to 120K; Android and Chrome new apps grew to 4x
- Engagement for new apps in their first three months stayed flat or declined; "zero/low usage" apps (under 10 ratings, under 100 downloads) are rising — no new winners emerged
- Sensor Tower: US app revenue index at 102 and usage at 107 by Aug 2026 (Dec 2024=100) — just +2% revenue, +7% hours
- Researchers coined "App-Slop" for the flood of AI-generated, unused apps
The only winner is AI itself: Productivity is the only US category with both revenue (+100%) and usage (+55%) growth, driven by ChatGPT, Claude, Gemini, and Grok; games declined. General assistants are squeezing single-purpose apps like Grammarly.
More numbers: Across 100K+ developers, AI tools grew code commits 180% but shipped releases only 30%. Only 3% of US consumers pay for AI services (5.9% among 18-24). Unicorn median age dropped to 4 years; SVB estimates 2,345 VC-backed US companies may fail in 2026.
Takeaway: vibecoding lowers the cost of validating ideas, not the cost of building a business — and it depresses the value of simple software.
Related event: a16z Data Shows AI Doubles App Supply While Demand Stays Flat(4 posts)→
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