Hi there are many apps that can help to boost up your neet preparation but I will only list which I have used some of them are

· Embibe- this is an incredible app that allows you to study topic wise they also have chat option which allows you to chat to experts there question are incredibly useful

· Grade up - one of highly used app which gives you notes,quizzes, option to ask you doubts you can ask for notes share your notes etc they even give you time table to study for neet

· Askiitians- another free app you can use to clear your doubts

This is purely my opinion and you can use them and see by yourself their usefulness

These apps can help you to Ace your exams but you must use it only for your study as these days mobile phones have become a huge distraction so use your phone wisely

Just not use your phone but utilize it.

Don't forget to UPVOTE the answer