Sensor Tower’s “Top Charts” for downloads from the Apple App Store shows OpenAI in first place, followed by Google’s Gemini and Anthropic’s Claude. xAI’s Grok doesn’t make the top 25. The Apple App Store ranks the downloads in the same order, but Grok is in 22nd place. While the list does not show the popularity ... Gemini Falls Behind ChatGPT As Grok Disappears