Reijiro - An English learning tool

I've found a sleek open source software for English study.

Reijiro: 間隔反復学習で英辞郎を「読む」アプリ
knsmr/reijiro · GitHub

Have you heard of "Spaced repetition"? According to wikipedia:

Spaced repetition is a learning technique that incorporates increasing intervals of time between subsequent review of previously learned material in order to exploit the psychological spacing effect.


Spaced repetition - Wikipedia, the free encyclopedia

Reijiro is a software which implements this method. We can use it by buying a CD of Eijiro*1 and installing this software into your PC. It's written in Ruby on Rails so it might be difficult if you don't have any knowledge of it.

However, this is very useful for me because I always forget the English words that I have learnt... I think we need to study something continuously when we learn something. It's difficult to manage progress only using a vocabulary list or a dictionary.

I've already installed it but the CD has not arrived yet. It will be delivered in a few days so I think I can review it next week.