Earn your black belt in English.
Short texts in a chat with the sensei. Every right answer earns XP, and XP ties your next belt.
Download on theApp StoreFree to start. iPhone, iOS 17 and later.
Right! Under the ground, the roots are connected.
A few minutes with the sensei.
Each bite is a short chat: four short texts on nature, science, history, culture or everyday life.
Read
A short English text at your level, with a meaning behind every dotted word.
Answer
A, B or C, or true or false. See straight away why, with the words that prove it marked in the text.
Write
One sentence in your own words, reviewed by AI.
Your own words, reviewed by AI.
Each bite ends with one sentence in your own words. The AI reads it against the text and tells you what worked and one way to push it further. It is feedback on your reading, not a grammar check.
Their roots are connected, so a big tree can help a small tree.
What worked: you got the core idea right: the trees are joined through their roots.
Try: Their roots are connected by tiny threads, so a big tree can help a small tree.
White to black, then dans.
Right answers earn XP, and XP ties your next belt. A belt never comes off, and the texts grow with you. There's no top.
A record that only grows.
Every belt with the day you tied it, your streak, and the bites, words and minutes you have read. Pro adds your reading level, every word you have met, and your records.
Start free.
Plus your stats: reading level, every word you've met, your records.
Prices in the app, in your currency. Cancel any time.