Features:
1. Conveniently recording new words with only two clicks while reading
2. Studying the words by groups: new, review, and learned
3. Learning language of your choice (20+ languages supported)
4. Syncing the words across iPhones, iPads and Macs over iCloud
Click on App Support for a 2 minutes tutorial (https://youtu.be/BXfbZhV7hCY)
Tips:
One finger click to see a words meaning
Two finger click to move the word to different group