Learn Estonian the smart way — with flashcards built on real linguistic data, not random user uploads.

CatyFlash uses spaced repetition (the proven FSRS algorithm) to move words from "just saw it" to "know it for life." You review each word exactly when you're about to forget it — so 15 minutes a day actually sticks.

Available in English, Russian, and Ukrainian — learn Estonian through whichever language you know best.

WHY CATYFLASH IS DIFFERENT

Most flashcard apps hand you an empty box and say "make your own deck." Then you drown in other people's typos, bad translations, and missing grammar. Learning from messy cards is harder, not easier.

We took the opposite approach. Every word, translation, and example sentence in CatyFlash is curated from the Institute of the Estonian Language (EKI) — the official authority on Estonian. No guesswork. No clutter. Just open the app and learn.

FREE FOREVER (A1–A2)

- 1,700+ essential Estonian words (CEFR levels A1–A2)
- Real example sentences for every word, sourced from the EKI corpus
- Native pronunciation by the Mari voice (TartuNLP / University of Tartu)
- Full Estonian grammar built into every card — all 14 noun cases, verb conjugations, every form
- Learn through English, Ukrainian or Russian
- Smart spaced repetition that adapts to how well you remember
- Works offline. No account. No ads. No tracking.

B1 LEVEL (OPTIONAL ONE-TIME PURCHASE)

- 2,741 new B1-level words with examples, word forms, and audio
- Didactic order — greetings and core verbs first, not raw frequency
- Switch freely between A1–A2 and B1 tracks on the home screen
- Cloud sync via Google Sign-In — protect your progress and restore it on any device

A1–A2 stays free forever. B1 is a single purchase — no subscription.

DESIGNED FOR REAL LEARNING

- Clean, distraction-free interface — a calm space to focus
- Honest self-rating: Again / Hard / Good / Easy
- See your progress: streak counter and words learned
- One tap reveals the full grammar of any word — all cases and forms in one place
- Beautiful typography, light and dark themes

PERFECT FOR

- Russian speakers living in or moving to Estonia
- Expats and newcomers learning Eesti keel
- Ukrainians settling in Estonia
- Anyone who wants Estonian done right, without the busywork

Estonian is hard — the cases, the forms, the unfamiliar words. We can't make it easy, but we can make it clean, correct, and steady. Open CatyFlash, learn ten words, and come back tomorrow.

Made in Estonia by Catyonic OÜ.

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Dictionary data: EKI Sõnaveeb (CC BY 4.0). Pronunciation: TartuNLP, University of Tartu. Free tier collects no personal data; signing in with Google (for B1 cloud sync) stores your email and learning progress to sync across devices.