Grubby: AI Humanizer & Writer

Grubby turns rough, robotic-sounding AI text into writing that reads naturally — then helps you study and retain what you wrote. HUMANIZER Paste in AI-assisted or stiff-sounding text and rewrite it in your own voice. Choose from three modes — Simple, Standard, or Enhanced — depending on how much of a rewrite you need, and see a Naturalness score on every result so you know how the writing reads before you send it. STUDY TOOLS • Summarizer — condense long articles, notes, or readings into clear summaries • Flashcards — turn any text into a study deck in seconds • Quizzes — generate practice questions from your material • Smart Notes — organize key points automatically YOUR HISTORY, ORGANIZED Every humanization and study session is saved to your history so you can revisit, copy, or reuse past results anytime. BUILT FOR EVERYDAY WRITING Whether you're polishing an email, a draft, or lecture notes, Grubby helps the words sound like you — clear, natural, and ready to send. Free to start, with premium plans available for higher word limits, longer inputs, and every mode. Questions or feedback? Reach us anytime from Settings → Contact Support, or at help@grubby.ai.