Spaced repetition
A word shows up right before you'd forget it. Every "I know it" pushes the next review further out — a day, three, a week, a month.
+14d
dům
[duːm]
house, building
1d3d1w2w1mo
Each correct answer pushes the next review further out.
Open beta
Words that actually stick. Flashcards with spaced repetition, right inside Telegram.
Zunoku is flashcards, spaced repetition, and AI set generation. No install, no sign-up, no clutter. Open it — start learning.
Já jdu domů, ale nejdřív musím koupit chleba a mléko v obchodě.
domů0.98
home (adv.)
nejdřív0.94
first, before all
koupit0.91
to buy (perf.)
chleba0.90
bread
No install
Open it in the browser
Right in Telegram
Mini App, no sign-up
Sync
Every device, any network
AI out of the box
Welcome credits included
Features
Everything for language progress — in one place
Flashcards, reviews, sets, progress. No clutter, no ads, no sign-up until you actually want one.
Telegram Mini App
Open the bot, tap Learn, and you're in the app. No accounts, passwords, or email confirmations — you sign in through Telegram itself.
AI generation
Drop in text or a topic — AI builds a set of cards with translation, IPA, and examples. Welcome credits included.
Ready-made sets
A catalog of sets across languages and levels. Your own set takes a minute — by hand or from text.
Browse the catalog
Goals and progress
A daily goal and clear progress for every set. Gentle reminders, no pressure or guilt trips.
AI
Drop in text — get a set of cards
A book, an article, a chat, a lecture transcript — hand it to Zunoku and in a minute you get a ready set: term, IPA, translation, example, and a note for each card.
- Start free — welcome credits included, no key or setup
- Top up credits as you go — the rest of the app stays free
- Prefer your own key? BYOK — Anthropic, OpenAI, Google — with no markup
Já jdu domů, ale nejdřív musím koupit chleba a mléko v obchodě.
domů0.98
home (adv.)
nejdřív0.94
first, before all
koupit0.91
to buy (perf.)
chleba0.90
bread
How it works
Three steps to your first "I know it"
From "just opened it" to your first finished session — a couple of minutes. After that the card decides when to show itself again.
1
Pick or build a set
Take a ready-made one from the catalog, build it by hand, or ask AI to make a set from your text — in a minute.
2
Learn the cards
Swipe, type the translation, multiple choice. Different formats keep your attention and train different skills.
3
Come back on time
Zunoku works out when you should return to a card. A daily goal and gentle reminders — so you don't fall off.
FAQ
What people usually ask
Is it really free?
Yes. Flashcards, sets, reviews, and sync are free. AI generation starts on free welcome credits; when they run out, top up credits or connect your own key (BYOK).
Do I need to sign up?
No. In Telegram you sign in automatically. In the browser you can sign in with your Telegram account in one click — no registration form.
Which languages are supported?
Any. Cards are stored as "term ↔ definition" with no fixed pair, so you can learn any language from any other. We support 35+ languages today, and the catalog keeps growing.
What does BYOK mean?
Bring Your Own Key — an optional way to run AI on your own API key from OpenAI, Anthropic, Google, or any OpenAI-compatible provider. We store the key encrypted (AES-256-GCM) and add no markup on BYOK: you pay the provider directly for actual usage.
Where is my data stored?
On our servers, so your progress syncs between the browser and Telegram. AI keys are kept encrypted (AES-256-GCM) and only reach the provider for the duration of a request. Your set content is yours — we don't share it.
How much does AI generation cost?
You start with free welcome credits. After that, AI generation runs on credits you top up — you pay per use, and everything else in the app stays free. Prefer your own key? With BYOK we add no markup at all.
How is Zunoku different from Anki or Quizlet?
Zunoku lives inside Telegram: no install, no sign-up, and review reminders arrive as messages. Unlike Anki, spaced repetition works out of the box — no decks to configure or plugins to install. Unlike Quizlet, there are no ads, and AI builds sets from your own text.
Ready to start?
Open Zunoku — and learn your first card in a minute
No forms, passwords, or email confirmations. Pick whatever's handy — browser or Telegram.