About this app
Every language in your hand, Eppi Words Tired of making word lists and looking up meanings by hand every time? Eppi Words completely reinvents the way you learn vocabulary. Experience the wonder of AI building your wordbooks automatically and giving you complete, detailed information. It supports languages from all over the world, including English, Japanese, Korean, Chinese, Spanish, French, German, Indonesian, Italian, Portuguese, and Vietnamese! Key Features 1. Automatic wordbook creation that AI handles for you Just enter a word, and AI translates it and automatically completes the meaning, phonetic symbols, part of speech, and more. It can read "text in a photo" and instantly extract 30 words, or build an entire word set when you simply enter a topic like "travel English." No more tedious word entry! 2. "Magic Card AI" that tells you everything about a word Even when you learn a single word, learn it deeply! The Magic Card feature goes far beyond a simple definition and uncovers everything about a word. - Word form expansion: Various derived forms such as verbs, nouns, and adjectives - Common expressions: Idioms and phrases that native speakers actually use together - Custom examples: Perfect example sentences and translations you can use right away in real life 3. Detailed learning stats that let you see your daily progress Check exactly how much you have grown with real data. See your vocabulary comprehension and overall proficiency, plus a timeline showing which wordbooks you studied each day and how much. Systematically manage words you have fully memorized, words that need review, and words still in progress. 4. A variety of voices that sound natural to your ears No more stiff robotic sounds! Choose the voice you want from a range of accents such as American, British, and Australian English, along with male and female voice options. Practice accurate listening with natural pronunciation. 5. A rich wordbook library suggested by AI Not sure which words to start with? Jump right into countless ready-made wordbooks organized by category, including beginner level, practical conversation, exam prep, and business. The AI learning center smartly recommends words that match your level. 6. Bored of just studying? Try building a sticker book Use the XP you earn while studying to buy your favorite stickers in the sticker book and decorate it. Learn more words and complete your very own sticker book! Eppi Words is recommended for people who: - Want their own personalized wordbook - Want to instantly save unfamiliar words they come across in photos or books - Want to study not only meanings but also example sentences and derived forms in depth - Learn several languages at the same time - Want to manage their learning history systematically and stay motivated Download Eppi Words right now and start building and studying your wordbook with the adorable Eppi character! ■ Payment & Service Information • All prices shown include value-added tax (VAT). • Withdrawal of purchase: available within 7 days of payment. In the app, go to [Settings → Customer Support → Write inquiry] and select "Payment cancellation / withdrawal". • Cancelling a subscription: request it in [Settings → Customer Support], or cancel directly in App Store account settings → Subscriptions. • Terms of Service: https://aivoca.app/terms-en.html • Subscription Terms: https://aivoca.app/subscription-en.html • Privacy Policy: https://aivoca.app/privacy-en.html
Latest release
What’s New
Start learning right away - No need to add words yourself - begin with a ready-made set on the first screen. - We now ask for notification permission only when it matters. More free content - Most featured decks on the home screen are now unlocked. - The Library has been redesigned, and downloaded decks are easier to find. A simpler home - We tidied away rarely used menus. - The full-screen ad after a study session is gone. Yearly plan and free trial - A yearly plan is now available, and you can try it free first. Stability - Clearer messages for offline, payment failure, and sync errors. - Fixed several sign-in and display issues.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Sep 2, 2026 · 5:09 AM Free