Currently, the mobile AI apps market is valued at $2 billion, primarily led by the success of ChatGPT, and the sector continues to rise with more apps.
In 2024 alone, over 4,000 new AI apps were released, and downloads reached a staggering 1.49 billion times across all AI apps.
But what are the most popular AI apps worldwide and in the US, besides ChatGPT?
Most Popular AI Apps (Top Picks)
- As of October 2025, ChatGPT ranks as the most popular AI app worldwide with 769.14 million monthly active users.
- ChatGPT has around 5x more users than any other AI app.
- ChatGPT, Google Gemini, and Doubao were the most downloaded AI apps worldwide in 2024.
Most Popular AI Apps Worldwide by Monthly Active Users (October 2025)
ChatGPT was the most popular AI app in October 2025 with 769.14 million monthly active users worldwide (excluding website users).
A total of 13 AI-first apps have an active monthly user base of 30 million or over.
Here’s a complete ranking of the most popular AI apps worldwide as of October 2025, ranked by monthly active users:
| Rank, App | Developer | App Monthly Active Users Worldwide |
|---|---|---|
| 1. ChatGPT | OpenAI (US) | 769.14 million |
| 2. Doubao | ByteDance (China) | 159.41 million |
| 3. Quark | Alibaba (China) | 151.66 million |
| 4. Baidu Wangpan | Baidu (China) | 148.14 million |
| 5. Gemini | Google (US) | 76.55 million |
| 6. Yuanbao | Tencent (China) | 73.29 million |
| 7. DeepSeek | DeepSeek (China) | 72.05 million |
| 8. Nova | HubX (Turkey) | 64.16 million |
| 9. Grok | xAI (US) | 54.77 million |
| 10. Dreamina | ByteDance (China) | 45.11 million |
| 11. Dola (formerly Cici) | Spring (Singapore) | 43.32 million |
| 12. Perplexity | Perplexity (US) | 35.74 million |
| 13. Character AI | Character AI (US) | 31.66 million |
| 14. AI Mirror | Polyverse (US) | 29.29 million |
| 15. Chatbot AI | Newway Apps (India) | 23.85 million |
| 16. PixVerse | PixVerse (China) | 23.62 million |
| 17. Kimi | Moonshot AI (China) | 23.47 million |
| 18. Ask AI | Deep Flow Apps (US) | 23.03 million |
| 19. Remini | Bending Spoons (Italy) | 22.8 million |
| 20. Talkie AI | Subsup (Singapore) | 22.15 million |
Source: Aicpb
Most Popular AI Apps by Downloads Worldwide (2024)
ChatGPT was the most downloaded AI app in 2024 by far, with 250.1 million installs worldwide, followed by Gemini and Doubao.
Here’s a complete table of the most downloaded AI apps across iOS and Google Play worldwide in 2024:
| Rank, App | Downloads Worldwide (2024) |
|---|---|
| 1. ChatGPT | 250.1 million |
| 2. Google Gemini | 81.5 million |
| 3. Doubao | No data available |
| 4. Microsoft Copilot | No data available |
| 5. Nova | 31.7 million |
| 6. ChatOn | 29.6 million |
| 7. Chatbot AI | 29.2 million |
| 8. Talkie | 27.9 million |
| 9. Character AI | 27.9 million |
| 10. Genius | 23.2 million |
Source: Analysis of Sensor Tower, Appfigures data
Most Popular AI Apps by Downloads in the US (2024)
In 2024, ChatGPT was the most downloaded AI app in the US with 31 million downloads, followed by Microsoft Copilot and Google Gemini.
Here’s a complete list of the most downloaded AI apps in the US in 2024:
| Rank, App | Downloads in the US (2024) |
|---|---|
| 1. ChatGPT | 31 million |
| 2. Microsoft Copilot | No data available |
| 3. Google Gemini | 7 million |
| 4. PolyBuzz | 6.5 million |
| 5. Question.AI | 6.5 million |
| 6. Talkie | 6 million |
| 7. Character AI | 5.4 million |
| 8. ChatOn | 5.4 million |
| 9. Linky AI | 3.52 million |
| 10. Future Baby Generator: Cosplay | 2.72 million |
Source: Analysis of Sensor Tower, Appfigures data
Most Popular AI Apps by Downloads in the US in First 18 Days Since Launch in the App Store
ChatGPT’s US launch ranked #1 with 1.4 million downloads in the App Store in the first 18 days since app release, followed by Google Gemini (951,000) and Microsoft Copilot (518,000).
For marketers, the next challenge isn’t just downloads, it’s tracking how brands surface inside LLM-powered apps.
Here’s the complete list of the most downloaded AI apps in the US in the first 18 days of release for each app:
| Rank, App | Downloads in the US (First 18 Days) |
|---|---|
| 1. ChatGPT | 1.4 million |
| 2. Google Gemini | 951,000 |
| 3. Microsoft Copilot | 518,000 |
| 4. DeepSeek | 384,000 |
| 5. Grok | 256,000 |
| 6. Claude | 132,000 |
Source: Appfigures
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