Hey Product Hunt! 👋 I'm João (Woigt), the solo developer behind Splitpost. The honest origin story: I kept looking at my own content backlog — articles I'd written, ideas I'd drafted — and doing nothing with them because the thought of manually adapting each piece for 4 different platforms was exhausting. Not hard, just soul-crushingly repetitive. So I built the thing that would do it for me. **A few things I learned building this:** 1. The prompt architecture is the actual product. The difference between AI output that's "technically correct" and output you'd actually publish comes entirely from how the prompts are structured — the platform-specific constraints, the tone guardrails, the negative examples. I spent more time on this than on any feature. 2. Stripe doesn't work in Brazil. The dominant payment processor is Asaas — completely different API model with PIX (instant bank transfer), boleto, and credit card as separate flows, each with their own webhook timing. Fun integration work. 3. "Supports Portuguese" ≠ good PT-BR output. Localization at the prompt level is a real engineering problem most tools ignore. Making Brazilian Portuguese output feel native — not translated — took significant prompt work. **What's next:** feedback-driven prompt iteration, Instagram automation, and onboarding improvements based on what early users actually need. This is early and focused on the Brazilian market. If you create content in Portuguese, I'd love to hear what you think. And if you're building for non-English markets, I'm happy to compare notes on the stack. — Woigt

Splitpost

Turn any content into posts for every social platform

Turn any content into posts for every social platform