I have my app on Ionic View app, which also means that it is on ionic.io. Is there a way to download the source code?
Unfortunately, this feature is currently not possible. I don't think it will ever be possible.
What you can do, but only if it's your application and you can prove it. Come to the Ionic Official Forum, post a message kindly asking admins (not moderators, I'm one of them and I know I can't help you) if they can mail to you your app.
Or you can mail them here: [email protected]