Academic writing can be challenging, especially due to tight deadlines and costly professional support. PaperCheck addresses these issues by providing affordable, AI-powered feedback on structure, clarity, and content, without writing for students, ensuring alignment with university guidelines. Unlike general-purpose tools, PaperCheck uses specialized algorithms and workflows to evaluate papers comprehensively in their full context and length. PaperCheck has empowered over 8,000 students across Switzerland, gaining adoption at major universities like ETH, HSG and HSLU. Supported by Microsoft for Startups and VentureKick, it has received attention in various media outlets. With thousands of comments and tens of thousands of interactions on TikTok, PaperCheck continues to grow rapidly.