since this app is widely used by Students it should be availeble for a fixed price. For alot of students subscriptions are an unrealistic financial commitment. I personally dont get why android/ win users should have to keep paying for a subscription while apple users get it at a one time fixed price.

It needs to fully work offline on all platforms and a sync between them is mandatory.

I have been looking forward to the first official release for a while, but sadly in this state right now it is missing to many features. Atm there are free apps that work a lot better.
Feels very beta for first release with alot of small and big bugs as mentioned by so many.