About English Root Words
English Root Words helps you learn vocabulary by understanding how words are built. Write an English word by hand, generate a root-based explanation, save useful words to your wordbook, and review them later with flashcards and memory checks.
Key Features
✍️ Handwriting-first word lookup
Write an English word on the canvas and select the recognized result. The app turns that word into a root-based learning card with meanings, examples, and explanations.
🌱 Learn through roots
Break words into meaningful parts so you can remember related words more easily instead of memorizing each word in isolation.
📚 Personal wordbook
Save generated words, browse them later, and keep your learning history on your device.
🃏 Flashcards and memory checks
Review saved words with flashcards and simple recall checks. Free users can keep reviewing saved words.
🔊 Audio playback
Listen to words and example sentences. Free users can use device speech; Pro users can access higher-quality AI voice features when available.
🔁 Import and export
Share your saved word list or import words from a file. Free import is allowed up to the free wordbook capacity.
Pricing Plans
| Plan | Price | Features |
|---|---|---|
| Free | JPY 0 | 10 root generations per day, up to 50 saved words, device speech, preset review timing, ads |
| English Root Words Pro | JPY 400 / month or JPY 3,200 / year | Unlimited wordbook storage, more root generation, no interstitial ads, high-quality AI voice features, custom review timing |
The paid plan is an auto-renewing in-app subscription. Prices shown in the app store may vary by region and currency. You can cancel renewal through your App Store or Google Play account settings.
Notes
AI-generated explanations may contain mistakes. Please use the app as a vocabulary learning aid, not as a dictionary or professional translation source.