The Scale
Gen AI apps are projected to rank among the top 5 mobile app categories globally by downloads, revenue and time spent in 2026, outranking Travel & Tourism, Shopping and Financial Services. In 2025 alone the category approached 4 billion downloads and $4.8 billion in in-app purchase revenue.
One App Is Most of the Category
ChatGPT became the #2 app globally by in-app purchase revenue, behind only TikTok, by Q3 2025 — and accounted for roughly 77% of the entire Generative AI app category's revenue into Q1 2026, an estimated $1.5 billion on its own. Most of the 'AI app boom' headline numbers are really one app's numbers.
What This Means for a Smaller AI App
The underlying demand is real, not just hype — overall non-game app revenue grew 21% year-over-year in 2025 versus 1.3% for games, with AI a meaningful driver. But competing head-on with ChatGPT-scale general assistants isn't the opportunity. The opening is the same one behind Kalori AI and AI Smart Job Finder: a narrow, specific use case a general assistant doesn't solve well, not a general chatbot competing on the category leader's own turf.