About

We help you own the words you meet.

Vocabul is an AI-native vocabulary app for every learner. You capture any word you encounter — in a book, a meeting, a song — and a single tap turns it into a rich, structured Card: definition, CEFR level, part of speech, collocations, examples and IPA pronunciation. The app is live on the App Store and used by independent readers, exam candidates and working professionals around the world.

We are an independent, self-funded product — not in stealth, not a waitlist, not a pre-launch teaser. Vocabul ships and updates regularly, and everything below is verifiable through the public links we link out to.

The team

Kostiantyn Zghara

Founder & Engineer

Kostiantyn builds Vocabul end to end — the iOS app, the AI pipeline that writes each Card, and the infrastructure behind it. He started Vocabul to solve his own problem: reading in a second language and losing every new word by the next day.

The company

Vocabul is built and operated by FOP Kostiantyn Zghara (Фізична особа-підприємець Костянтин Згара), a sole proprietor registered in Ukraine. You can verify us and reach us through these public links:

See it for yourself.

Vocabul is free to start. Download it and turn the next word you read into one you keep.

Download on the App Store