Pros
None at all, as far as i remember.
Cons
They won't pay you.
They will exploit you.
One of our co-intern was threatened, they said either they would file a case of sexual harassment against him or he has to leave the company, all his fault was he talked to an female employee rudely. They didn't even pay him.
They don't even stick to the contract. They suddenly increased the office timings to 12 hrs a day, 6 days a week.
Personally, I don't think this startup has any future if this is the way they treat their employees and interns.
They have a very ugly website.