Doxium - AI document Q&A for PDF, Excel, Word, PowerPoint

Been building Doxium for the past few weeks alongside my CS studies. It's an AI document Q&A tool — upload any file (PDF, Word, Excel, PowerPoint, CSV) and ask questions in plain English. Main differentiator:charges $20/mo and handles PDFs only. Doxium handles 9 file types at $7/mo. Demo: https://youtu.be/pbKs07nZByY?si=... Try free: https://web-production-6ddf4c.up... 0 users so far. Would love feedback from people who've been here before.