Voiko

Voiko is an AI vocabulary coach that helps you understand any English word instantly — right where you're reading.

Highlight any word on any webpage and Voiko shows you:
• A plain-English explanation written like a message from a smart friend
• A relatable analogy to make the meaning stick
• A real example sentence
• Pronunciation (UK & US IPA) with audio
• Synonyms
• A translation in your native language

Why install Voiko?
Most people skip words they don't know. Voiko makes looking up a word effortless — no new tab, no dictionary app, no interruption to your reading flow. You learn the word in context, which is how vocabulary actually sticks.

Built for non-native English readers
Voiko is designed for people reading English as a second language. Every explanation is adapted to your native language and English level — beginner, intermediate, or advanced.

Your personal word history
Every word you look up is saved to My Words — a searchable vocabulary list you can review, filter by notes, and export to Notion or Obsidian.

Free to start
The free plan gives you unlimited dictionary lookups with definitions, IPA, and example sentences. You also get 10 free AI-powered Pro lookups to try explanations, analogies, and native translations. Upgrade to Pro for unlimited AI lookups and note-taking.