Google Gemini has been steadily climbing up the app store install rankings over the past few weeks, and if current growth continues it could push ChatGPT off the top spot.

In the past month, Gemini has went from around three million weekly installs to 13 million in the second week of September, according to data from app intelligence firm AppMagic.

ChatGPT, Gemini weekly downloads July to Sept 2025 (mm)

Part of the reason for the surge in installs comes from the launch of Nano Banana, Gemini’s photo editing and image generation model that lets users turn selfies into 3D figurine style portraits. According to Google, this brought 10 million new users to Gemini, with a lot of them choosing the mobile app.

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Google has also stepped up its marketing of Gemini on television and online channels in the past few months. The company’s new Pixel 10 smartphones have AI front and centre, as one of the key features differentiating it from competitors.

ChatGPT still holds the crown for number of installs, at 17 million last week. It is also far ahead of Gemini for September total, at 41 million to Gemini’s 20 million.

It’s less likely that Gemini installs will stick in comparison to ChatGPT, as Gemini has surged due to a viral feature that people are likely to stop using after the hype fades. This is not the case with ChatGPT, which is approaching close to one billion weekly active users.

Perplexity is the only other chatbot in the top 100 for installs in September, although this is skewed by the large percentage of total downloads from India. If we just look at downloads from the United States, Perplexity, Gauth and Grok are all in the top 100. Apps from companies spending billions on AI research, such as Meta AI, Copilot by Microsoft and Claude by Anthropic, these are still getting less than two million downloads per month.