Spaced Repetition is a technique to help users learn a new language by giving more emphasis to words users have trouble remembering. Words that are guess correctly are revisted less and less frequently as they are mastered.
You can access a working prototype of the React app here: https://spaced-repetition-v2.vercel.app/
You can access repositories here: React app: https://github.com/CourtneyCarson/spaced-repetition Node app: https://github.com/CourtneyCarson/spaced-repetition-api