Why you need wnr? I think there are basically three reasons.
People often study or work too much in a row, which can lead to the decline of working efficiency.
People sometimes stare at the screen all the day.
People sometimes relax too much.
And wnr aimes to solve these problems.
wnr has a modern interface.
wnr has got multi-lingual support.
wnr has got some feature to make the rules more strict, so that you must work and you must rest.
wnr has got lock mode, etc.
wnr is easier and more convenient to use with fine settings, including predefined tasks settings.