I built Aprovado.ai (http://Aprovado.ai) solo,

I built Aprovado.ai solo, end-to-end — a SaaS that converts any study PDF into Anki-ready flashcards in under 60 seconds using LLMs.

The product is live in production. I handled everything: Next.js + TypeScript frontend, LLM API integration with quota control per plan, freemium model with three tiers (Free / Pro R$29/mo / Lifetime R$297), and a full payment gateway supporting card, PIX, and boleto.

Features include a Dynamic Reading Mode, image flashcards, advanced study statistics, and automated CI/CD on Vercel. The target market is Brazilian students preparing for public service exams, a highly competitive niche where study efficiency directly determines outcomes.

Not a side project experiment. A product with real users, real payments, and real results.