When you first sign up to Supernotes, you are given 40 cards for free, this may seem small at first glance but it's not. It is possible for you to have access to hundreds or even thousands of cards as a free user.
We came up with a different file storage method at Supernotes.
Conventional file storage systems are unfair and not suitable for sharing information. Currently it is always the onus of the author to host and pay for the storage of their notes, whether it is through Dropbox, OneDrive or iCloud. Thus leaving the readers of the notes not contributing and immediately downloading the notes - in fear that they will not be able to access it in the future. Resulting in unnecessary duplicates, messy files and a waste of time.
With Supernotes, as soon as you create, join or interact with a card, it's yours to 'Keep'. And only the cards you have 'kept' will count towards your available card storage, i.e. you are only using up space for cards that interest you. Don't like them any more? Reclaim space, by 'Junking' any cards that you have kept. And best of all, once you have kept a card you cannot lose access. Think of it like a physical note, once it's in your hands no one can take it away from you (well almost).