Hello student as both Vedantu and Unacademy is a third party education portals we don't have information about that so I believe its not fair to judge any one of them, I request you to please help me with the entrance examination you're concerned about so that I can check and provide you the best available packages on careers360.

If you're preparing for Jee main entrance examination you should consider careers360 knockout package for preparing and qualifying the entrance examination as it offers you 100 percent money back guarantee if you do not qualify.

Refer to the link mentioned below - https://learn.careers360.com/knockout-jee-main-april/

Feel free to comment if you have any doubt

Good luck