ChatOn

ChatOn is a chat-based personal AI assistant for consumers who want help with everyday questions, writing, research, and creative work on iOS and Android.

Key capabilities include:

• Multi-model chatbot with access to many LLMs (including GPT-5, Gemini 2.5 Pro, Claude 3.7 Sonnet, and Perplexity Sonar) for Q and A, drafting, rewriting, and follow-up questions, no API keys required
• Web search for up-to-date answers, plus YouTube summarization listed as coming soon
• Doc and file understanding via Doc Master, summarize, rewrite, and translate PDF, DOC, TXT, and EPUB, with support for uploaded images (JPEG, JPG, PNG, WEBP)
• Generative creation tools, including image generation (for example DALL-E, Stable Diffusion, FLUX), video creation (for example Runway, Kling), and music composition (for example Suno, Udio)

Pricing: Freemium (Free and Premium plans).

Notable for its Compare feature that shows responses from different models side-by-side, plus writing tone controls and broad multimodal support (text, voice input, audio playback). The product reports 85M+ downloads and provides web access alongside mobile apps.