It's impressive that you've build a good looking app. Good job on that.

Unfortunately, the app seems to fall into "build it but they won't come" category i.e. lacking product-market fit.

I used to be a student and I don't remember planning activities being a significant problem.

Another problem is that you have no monetization strategy. If your app is not free, no-one will use it and it obviously requires massive adoption to be useful.

Even if it gets massive adoption, then what? Will you put ads in the app?

How will you keep getting new users to offset the loss from people finishing college?

You have a chicken-egg problem when it comes to adoption, built-in 4-year churn and very few options to make money. It might be a useful app but a terrible business.