Drip-feed Content Extended for Learndash is developed with the same goal: to *allow the admin to drip-feed lessons, topics and quizzes* with an additional release schedule. Meanwhile, the customized drip-feed message option is one of the attractive features that also help you to add multimedia to the drip-feed message.
On the other hand, the additional drip-feed scheduler option allows you to simply schedule/drip-feed lessons, topics, and quizzes for X days after completing X lesson, topic, and quiz.