Misinformation on social media undermines informed decision-making and public trust. Prebunking offers a proactive complement by helping users recognize manipulation tactics before they encounter them in the wild. We present CritiSense, a mobile media-literacy app that builds these skills through short, interactive challenges with instant feedback. It is the first multilingual (supporting nine languages) and modular platform, designed for rapid updates across topics and domains. We report a usability study with 93 users: 83.9% expressed overall satisfaction and 90.1% rated the app as easy to use. Qualitative feedback indicates that CritiSense helps improve digital literacy skills. Overall, it provides a multilingual prebunking platform and a testbed for measuring the impact of microlearning on misinformation resilience. Over 3+ months, we have reached 300+ active users. It is freely available to all users on the Apple App Store (https://apps.apple.com/us/app/critisense/id6749675792) and Google Play Store (https://play.google.com/store/apps/details?id=com.critisense&hl=en). Demo Video: https://shorturl.at/CDcdc

翻译：社交媒体上的错误信息损害知情决策与公众信任。预先揭穿作为一种主动补充手段，通过帮助用户在真实遭遇前识别操纵策略发挥作用。我们推出CritiSense——一款通过即时反馈的简短交互式挑战来培养这些技能的移动媒体素养应用程序。这是首个多语言（支持九种语言）的模块化平台，专为跨主题和领域快速更新而设计。我们报告了一项涉及93名用户的可用性研究：83.9%的用户表示总体满意，90.1%的用户认为该应用易于使用。定性反馈表明CritiSense有助于提升数字素养技能。总体而言，它提供了一个多语言预先揭穿平台，以及一个用于衡量微学习对错误信息抵御能力影响的测试平台。在超过3个月的时间里，我们已触达300多名活跃用户。该应用已在Apple App Store（https://apps.apple.com/us/app/critisense/id6749675792）和Google Play Store（https://play.google.com/store/apps/details?id=com.critisense&hl=en）向所有用户免费提供。演示视频：https://shorturl.at/CDcdc