Poly-Puff

In-app purchases
Content rating
Everyone
5+
Downloads
Content rating
Everyone
In-App Purchases
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About this app

Poly-Puff is an AI-powered English learning app built around personalized translation practice, grammar mastery, and real conversational skills - from complete beginner (A0) through advanced (C2).

WHAT YOU CAN PRACTICE
• Translation Trainer - translate sentences from your native language into English, with instant AI feedback tailored to your level
• Grammar Practice & Grammar Quiz - targeted exercises drawn from a structured grammar rule bank covering the areas learners actually get stuck on
• Vocabulary & Word Chunks - build your word bank with spaced repetition and natural phrase patterns
• Listening - train your ear with real-paced English audio and comprehension checks
• Writing Practice - get AI feedback on your writing, from short answers to full compositions
• Daily Challenge - a new mixed-skill exercise every day to keep your streak alive
• Placement Test - find your CEFR level (A0-C2) with an assessment that grades your writing and speaking, not just multiple choice

LEARN YOUR WAY
Tell Poly-Puff about your profession, interests, and native language, and exercises adapt to give you practical, relevant sentences instead of random textbook filler.

STAY MOTIVATED
Track your XP, streaks, and badges as you progress, and compare your progress on the community leaderboard.

FOR TEACHERS
Poly-Puff Classroom lets teachers create a classroom, assign exercises, and track student progress in one place.

Poly-Puff is free to start, with optional Pro and Teacher plans that unlock deeper practice and classroom tools.
Learn English with AI-powered translation, grammar, and speaking practice.
Updated on
Aug 26, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Personal info, App activity and 2 others
  • This app may collect these data types
    Personal info, Financial info and 4 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

Light theme now covers the entire sign-up flow, including a quick picker on first launch so you can choose Light or Dark right away.

Fixed a bug where the Listening exercise wasn't playing its correct/incorrect sound effects.