Polish · Laboratorio Tresojotas · In-house agency product
Polish is our AI language coach: paste a message, an email or a sentence and it comes back in natural English or Spanish, with every change explained. The difference lives underneath: it remembers your mistakes, detects your patterns and trains you with exercises built from your real errors until you beat them. Sign in with Google and start free: no API key, no setup. Live in production, and growing into teams with Polish for Business.
A translator or a chatbot solves today's text but teaches you nothing: tomorrow you make exactly the same mistake. And generic courses drill what happens to everyone, not what happens to you. We built Polish to change that: a tool that corrects like a professional and, above all, builds a memory of every mistake, so the AI can detect your patterns and help anyone improve, whatever their level or language.
We designed Polish around a 10-second flow: paste your text, pick the tone, and get the polished version with a card per change: what was corrected, why, and which type of error it is. Every correction feeds your profile: the coach detects your patterns, flags it when you repeat one and celebrates when you beat it. From there come tailored exercises with spaced repetition, conversation practice by text or voice, and a level that evolves with you. You choose the language you're learning (British or American English, Spain or Argentina Spanish) and the whole experience lives in that language. And one key product decision: you start free with zero setup, with the trial running on our own AI, and when you want unlimited use you connect your own API key (Gemini's is free). Polish stays free, private and subscription-free.
Polish is live in production and open to anyone: sign in with Google and start polishing your English (or your Spanish) right away: no API key, no card, no setup. When you want unlimited use, connect your own free key and the app walks you through it in two minutes. The AI turns your own mistakes into a practice plan: no cost, no ads, no data shared. And it's already growing into companies: Polish for Business brings the same coach to teams, with the brand's tone and the team's aggregate progress visible to managers, never their texts.