When it comes to onboarding, too many apps open for the first time to a series of sliding screens that do nothing more than look pretty and provide more reading about what the product does. Don’t do this.
The users who installed your app already took a set of high-friction actions to find it in the App Store, install it and open it after download. They didn’t do all that just to learn more about your product. No one pauses to read this text. And the very few who do immediately forget what they read when they have to take an action like filling out a signup form.
– via firstround.com