Comparison · 12 Aug 2026 · Mixed confidence
Nothing in consumer tech scaled to a billion this fast
ChatGPT’s app: about 3.4 years. Gemini’s app: about 21 months from standalone launch — with Android underneath it. TikTok took five years.

How to read this
X, Spotify, and Netflix have never reached 1 billion. iPhone is units sold, not users. Gemini’s clock depends on whether you start at Bard (Mar 2023), the Gemini brand (Dec 2023), or the standalone app (Nov 2024).
Sources
Sensor Tower / Reuters · Google · Meta · TikTok · Apple