Kosha — personalized vocabulary app icon Personalized vocabulary builder

Learn vocabulary that fits your life

Kosha is a language learning app built around your interests, topics, and daily life — not a one-size-fits-all textbook. Browse word cards, practice with cloze sentences, build your library, and get AI daily word lists made for you.

Learn vocabulary in

  • English
  • German
  • Spanish

Key features

Browse word cards

Swipe through interactive word cards with translations and context. Bookmark words you want to remember — they flow into Practice when you're ready.

Practice in context

Fill in the blank with cloze sentences. Reveal the answer, then mark words you knew or missed. Spaced repetition helps vocabulary stick in real usage.

Your library

Review browsed words, practiced words, and past daily lists. Filter, tap for details, and launch a practice session from any list.

Daily List

Tell Kosha about your day — a coffee with friends, a trip to the market — and get an AI-generated word list tailored to what you actually did.

Personalized to you

Pick interests and topics during setup. Kosha uses your choices — plus your city and country — to surface vocabulary that matches your world.

Streaks & daily tasks

Stay consistent with practice streaks and daily tasks: browse words, practice what you've seen, and build a rhythm that compounds over time.

How Kosha works

  1. Set up your profile

    Choose your learning language, fluency level, interests, topics, and location. Kosha builds word queues around you.

  2. Browse new words

    Discover vocabulary on interactive cards. Swipe between translations, bookmark words, and add them to your practice queue.

  3. Practice with cloze

    Test yourself with fill-in-the-blank sentences. Mark what you know — Kosha tracks progress and brings words back when you need them.

  4. Review & grow

    Use your Library to revisit words, create Daily Lists from your life, and keep your streak alive with small daily sessions.

Frequently asked questions

What is Kosha?
A personalized vocabulary app for language learners. Kosha surfaces words based on your interests, topics, and location — then helps you remember them through browse, cloze practice, and daily lists.
How is Kosha different from flashcard apps?
Most apps give everyone the same decks. Kosha builds vocabulary around your life — your interests, where you are, and what you did today — with AI daily lists and contextual cloze practice.
What languages can I learn?
English, German, and Spanish. Pick your learning language and fluency level when you sign up.
Is Kosha free?
Yes — Kosha is free to download with a free tier for daily browsing and practice. Premium unlocks more daily lists, interests, and premium topics.