Main features: AI-powered reply generation for WhatsApp with double-tap activation on iPhone back, intelligent screen text extraction, ChatGPT processing (GPT-4o-mini or GPT-4o), multilingual translation, and customizable response styles. Use cases: WhatsApp chat replies, cross-language communication, personalized social interactions. Core advantages: second-level response generation, privacy assurance (data directly sent to ChatGPT without storage), visual recognition support (Ultimate plan). Workflow: install shortcut → open app → double-tap phone back → AI processes screen content to generate replies. Pricing: free trial (1 day, 5 requests), annual plans (Starter $9/10K requests, Advanced $19/1K requests, Ultimate $29/1K requests), Ultimate plan includes GPT-4o visual recognition and priority support.