Local storage possible?

Hi, I’m building an app on here. I want to wrap it using codeless academy. It’s basically a loyalty card mobile wallet like stocard. I want users to be able to store their cards on their phone so they can use the native app whether they’re offline or not. There’s another part to it too but that can’t do without the internet. But for the mobile wallet part is there a way to let users store their loyalty cards on their phone if they don’t have an account with us. And sync their cards with our database once they get an account.

Local Storage is possible via some Javascript or a few different plugins. But Bubble is to make Web Apps so you need internet. If the user doesn’t have internet and they refresh the page or do anything it will error out.