Elon Musk's AI chatbot Grok has claimed the #1 spot for free apps on the Google Play Store, surpassing both ChatGPT and TikTok. The xAI-developed app currently holds a 4.9 rating, outshining TikTok's 4.1 and ChatGPT's 4.8. Grok's success is partially attributed to its unlimited free image generation feature, similar to ChatGPT's Ghibli-style art capability but without daily limits. The recent Grok 3 update, promising faster responses and enhanced image generation, has further boosted its popularity among Android users.