Fabulous article from Igor on a great way you can make your users happier. Nobody likes to wait for apps to complete a task. Since it takes some time to finish, this technique leaves the user with a better feeling.
Optimistic UIs don’t wait for an operation to finish to update to the final state. They immediately switch to the final state, showing fake data for the time while the real operation is still in-progress.
Optimistic UIs in under 1000 words by Igor M.
Cards are very popular in apps such as Pinterest and it's easy to see why. They are a great way to present information to a user that is action driven and focused on the content. Plus, they look nice and with the right animation make an app come alive. If you want to use cards in your apps, be sure to read this best practice article from Nick Babich.
Best Practices for Cards by Nick Babich