Content dripping with shortcodes

I am looking for php code or a plugin were I can execute content dripping by shortcodes.

I want to do courses after signup were you get every new day more information on the same page. Most plugins offer content dripping by page (with a agenda and making the page visible after x days). I want to make the page visible from day one and give more information every day with shorttags like:

[day1]
content..
[/day1]
[day 2]
content..
[/day2]

The cool thing about this feature is: the new day can always be in the top so if the course is for mobile users they dont have to scroll down a month or look for day 30 after a month.

It is important the contentdripping is connected to signup date of a user. I hope someone can give me some good tips about this issue.