Spent the last 4-5 months building an AI flashcard/study tool (its called Deckio). Started as something I wish existed, then ended up as a live product with ~1,500 users and a handful of paying ones. Built it solo with Next.js, Supabase, and the Gemini Vertex API. A few honest takeaways: Shipping something rough and real beats polishing something that never launches. My first version was pretty bad but it didn't matter. The hardest part was not coding the whole thing, it was distribution...