Product
Polygon — the practice arena Available Now
Open any of 100+ game formats, set a topic and a level, and play an exercise that did not exist a minute ago. Polygon is where YAKKI’s generation engine meets the learner directly.
What it is
Not an exercise bank — an exercise factory
Traditional learning apps ship with a fixed library of exercises. Once you’ve seen them, repetition becomes memorization of answers, not of language. Polygon works differently: every session is generated on demand by AI models, from the topic and level you choose.
That means a learner who loves football practices conditionals on football. A learner preparing for a biology exam drills vocabulary on cell structure. The language mechanics stay rigorous; the content follows the learner’s world.
How it works
From topic to game in four steps
- Choose a topic — Anything — sports, space, cooking, this week’s news. Free text or picked from suggestions.
- Set the level — CEFR-aligned, from A1 beginner to C2 advanced. The same topic adapts to the level.
- Pick a game — Quiz, cloze, word scramble, listening, error hunting, dialogue building — 100+ formats organized by skill.
- Play and get feedback — Answers are checked instantly; free-text answers receive an AI review explaining what was right and what to improve.
Why it matters
What makes Polygon different
Infinite, fresh content
Every session is generated afresh. Re-playing a game with the same topic produces a new exercise — practice stays practice.
Real level control
Vocabulary range, sentence complexity, and task difficulty are tied to the chosen CEFR level, not left to chance.
First-language interface
Instructions, buttons, and feedback can appear in the learner’s own language — Hebrew, Arabic, Russian, Amharic, or English — so beginners are never lost in the interface.
Feedback that teaches
Beyond right/wrong: for open answers the model reviews the learner’s text and explains the correction, like a patient tutor.
Built for testing, hardened by it
Polygon is also our internal proving ground — every game format passes through systematic play-testing here before it reaches a classroom.
One engine, every skill
Vocabulary, grammar, reading, listening, pronunciation, writing, and communication strategies — one place to train all of them.
Availability
How to get access
Polygon runs inside the YAKKI EDU Android application. The app is currently distributed to pilot schools and partner programs; public download and a web version are in development.
Want to try it? We demonstrate Polygon live on real devices — request a demonstration and play it yourself.
Try Polygon with your class or institution
Live demonstrations for schools and partners, with real generation on real devices.