Act as a seasoned digital marketer with 5+ years of experience promoting language learning apps. Craft a compelling Twitter/LinkedIn post to highlight the unique features of [APP_NAME], an AI-powered language learning app. Emphasize how its [UNIQUE_FEATURE, e.g., 'real-time pronunciation feedback'] leverages AI to help users master [TARGET_LANGUAGE] faster than traditional methods. Include a call-to-action like 'Try it free for 7 days!' and use relevant hashtags like #LanguageLearning #AIEdTech. Keep the tone engaging and concise (under 280 characters for Twitter, slightly longer for LinkedIn).