Claude gains market share: now 14.9% of US AI app users

The AI assistant Claude from Anthropic has in a short time gained a significantly larger share of the market for mobile AI apps. That is according to figures from analytics firm Apptopia, which measures how many people use apps every day.

In Apptopia's June report from June 3, 2026, Claude accounts for 14.9% of daily users of AI chat apps in the US. ChatGPT from OpenAI accounts for 30.7%. The rest, about 41.8%, goes to other apps such as Gemini, Grok and Microsoft Copilot.

Strong growth for Claude

According to Apptopia, Claude's daily users have grown by about 1,100% since the start of the year. ChatGPT has declined by about 12% over the same period. That does not mean ChatGPT is small. It is still the largest single app, but its lead has shrunk.

The trend has been going on for several months. In Apptopia's March report, Claude was at 10% of daily users among the seven largest apps, up from about 4% in February and under 2% in December. ChatGPT fell to 38.7% at the time, the first time below 40%. Six months earlier, it had almost 52%. Note that the two reports use slightly different methodologies, so the figures cannot be compared directly.

Not just a snapshot

Apptopia stresses that Claude's growth is not just a result of attention. According to the report, the users are also more active: engagement per user is now above ChatGPT's.

At the same time, it is not a simple battle where users choose one or the other. About 66% of Claude's users also use ChatGPT. So many have both apps on their phone and use them for different things.

What does it mean for you?

The figures apply to US users and only to mobile apps, so they do not necessarily say anything about Denmark or about use on computers and in work tools. But they show that the market for AI assistants is in motion and that ChatGPT no longer has the field to itself. For ordinary users, more competition typically means more choice and faster development of new features.